Location Of Holes Research Articles

Energy absorption characteristics of E-glass/epoxy over-wrapped aluminum pipes with induced holes: an experimental research

The effect of inducing circular holes into aluminum wrapped with glass/epoxy (Al/GFRP) pipes was investigated. Intact and holed specimens were evaluated in quasi-static axial compression after being constructed using the wet wrapping procedure. The effect of the induced holes' parameters i.e., hole diameter (d), number of holes (n), the hole position to specimen height ratio (L/H), on the crashworthiness of Al/GFRP structures was investigated. Results indicated that the existence of the cutouts visibly affects the values of crushing parameters. Increasing (d) remarkably reduces the total absorbed energy (U) and enhances the crushing force efficiency (CFE) of Al/GFRP pipes. Introducing two holes in two opposite faces with keeping their location constant reduces initial peak crush force {(mathrm{F}}_{mathrm{ip}}), mean crush force {(mathrm{F}}_{mathrm{m}}), and U of Al/GFRP pipes but increases CFE. As the hole location goes to the lower edge of the pipe i.e., L/H increases, U obviously increases. The specimens with 4 mm holes in one side at medium height and specimens with 12 mm holes on one side at L/H = 0.8 had the best crushing parameters, respectively. The adequate design of the induced cutouts in thin-walled constructions is valuable to enhance the crashworthy performance of engineering structures.

Physical Simulation of Ultrasonic Imaging Logging Response

Ultrasonic imaging logging can visually identify the location, shape, dip angle and orientation of fractures and holes. The method has not been effectively applied in the field; one of the prime reasons is that the results of physical simulation experiments are insufficient. The physical simulation of fracture and hole response in the laboratory can provide a reference for the identification and evaluation of the underground geological structure. In this work, ultrasonic scanning experiments are conducted on a grooved sandstone plate and a simulated borehole and the influence of different fractures and holes on ultrasonic pulse echo is studied. Experimental results show that the combination of ultrasonic echo amplitude imaging and arrival time imaging can be used to identify the fracture location, width, depth and orientation, along with accurately calculating the fracture dip angle. The evaluated fracture parameters are similar to those in the physical simulation model. The identification accuracy of the ultrasonic measurement is related to the diameter of the radiation beam of the ultrasonic transducer. A single fracture with width larger than or equal to the radiation beam diameter of the ultrasonic transducer and multiple fractures with spacing longer than or equal to the radiation beam diameter can be effectively identified.

Vision-Based a Seedling Selective Planting Control System for Vegetable Transplanter

Seedling transplanting is an important part of vegetable mechanized production in modern agriculture. After the seedlings are cultivated on a large scale by the nursery tray, they are planted into the field by the transplanter. However, unlike manual transplanting, transplanter is unable to judge the status of seedlings in the hole during seedling planting, which leads to problems such as damaged seedlings and empty holes being picked in the same order and planted into the field, resulting in yield reduction and missed planting. Aiming at this problem, we designed a seedling selective planting control system for vegetable transplanter which includes vision unit, seedling picking mechanism, seedling feeding mechanism, planting mechanism, pneumatic push rod unit, limit sensor, industrial computer and logic controller. We used asymmetrical light to construct visual identification scenes for planting conditions, which suppresses environmental disturbances. Based on the intersection operation of mask and image, a fast framework of tray hole location and seedling identification (FHLSI) was proposed combined with FCM segmentation algorithm. The vision unit provides the transplanting system with information on the status of the holes to be transplanted. Based on the information, planting system chooses the healthy seedlings for transplanting, improving the survival rate and quality of transplanting. The results show that the proposed visual method has an average accuracy of 92.35% for identification with the selective planting control system of seedlings and improves the transplanting quality by 15.4%.

A Modern View of Human Tooth Roots Apical Morphology (Literary Data Analysis)

Many anatomical landmarks and their corresponding terminology can be found in the scientific and educational literature that characterize the apical third of tooth roots. They are often used in the subsequent description of the clinical situation to carry out treatment procedures and predict the outcome of the disease. The morphology of the apical third of the root canals has always been the subject of research. The use of electron-scanning and stereo microscopes in the study of the apical third have become a new challenge for both researchers and practicing dentists. This method of research allows not only to determine the location, shape, size and quantity of the anatomical hole, but also to characterize the morphology of the most hidden details of its lumen accurately. A study of the literature revealed that a number of studies have been devoted to the study of Intradont architectonics. At different times, apical thirds of different groups of teeth were examined under a scanning and stereo microscope in various countries. Our literature analysis revealed many interesting and mutually exclusive facts. Noteworthy is different (heterogeneous) terminology of the morphological elements of the apical part of the root, which complicates the theoretical understanding of the issue and its application in clinical practice. The abovementioned demonstrates not only the importance of conducting such research in Georgia and its need. However, studying the apical thirds of the tooth roots that will be the target of our future.

A Modern View of Human Tooth Roots Apical Morphology (Literary Data Analysis)

Many anatomical landmarks and their corresponding terminology can be found in the scientific and educational literature that characterize the apical third of tooth roots. They are often used in the subsequent description of the clinical situation to carry out treatment procedures and predict the outcome of the disease. The morphology of the apical third of the root canals has always been the subject of research. The use of electron-scanning and stereo microscopes in the study of the apical third have become a new challenge for both researchers and practicing dentists. This method of research allows not only to determine the location, shape, size and quantity of the anatomical hole, but also to characterize the morphology of the most hidden details of its lumen accurately. A study of the literature revealed that a number of studies have been devoted to the study of Intradont architectonics. At different times, apical thirds of different groups of teeth were examined under a scanning and stereo microscope in various countries. Our literature analysis revealed many interesting and mutually exclusive facts. Noteworthy is different (heterogeneous) terminology of the morphological elements of the apical part of the root, which complicates the theoretical understanding of the issue and its application in clinical practice. The abovementioned demonstrates not only the importance of conducting such research in Georgia and its need. However, studying the apical thirds of the tooth roots that will be the target of our future.

An experimental and statistical evaluation of flexural performance of single and double notched glass/epoxy composite

The existence of a notch in a composite structure is inevitable. However, its presence automatically changes the stress distribution pattern in the component. The present work analyses the flexural performance of glass/epoxy composite with single and pair holes in different locations and sizes. In paired holes (2 mm diameter), stress concentrations were placed at a distance of 10, 20 and 30 mm. In single hole specimens, the notch locations were at 4, 8 and 12 mm distance with hole diameter of 2, 4 and 6 mm. The work suggests a significant drop (30.21%) of flexural strength with a hole placed at 10 mm, which eventually reduced up to 14 ± 1% with the hole moving further away in a paired configuration. Although, the optimum performance was at 20 mm location with improvement in flexural modulus by 12.27%. The single hole arrangement reiterates the significance of hole location and reports that flexural strength decreases significantly as it moves away from the support end (42.44%). However, this drop is never linear, suggesting a fall between mid-location. The notch size appears as an important element in flexural performance for it changes the stress distribution around the hole and the associated damage propagation. The above analysis supported Weibull statistics and found good agreement with experimental results.

Patent mining on soil pollution remediation technology from the perspective of technological trajectory

Recent years have seen a marked growth in soil environmental problems, however, the research & development (R&D) direction of soil pollution remediation technology (SPRT) for addressing related challenges to the global ecosystem is still unclear. Patent is the most effective carrier of technological information. Therefore, this study investigates the status and future direction of SPRT through the analysis and mining of 14,475 patents from 1971 to 2020. In 2006–2020, 14,435 SPRT patents (79% of the total) were published, which is in the development stage. By measuring the proportion of high-value patents, determined by the ratio of the number of patent families containing two or more patents (PF2) to that containing at least one patent (PF1), we found that United States (PF2/PF1 = 0.711), Japan (PF2/PF1 = 0.500), and South Korea (PF2/PF1 = 0.431) hold a monopoly. International patent organizations serve as a bridge for technology transfer. Patent CN101947539-A measured by structural hole index (Effective size = 98.194, Efficiency = 0.926) has the most significant technological influence. Therefore, in order to accomplish the technological transition and improve the soil remediation capacity, more attention should be paid to the microbial-assisted phytoremediation technology related to inorganic pollutants, hyperaccumulators and stabilizers. Additionally, patents CN102834190-A (Effective size = 23.930, Efficiency = 0.855, Constraint = 0.141, Hierarchy = 0.089) and CN105855289 (Effective size = 21.453, Efficiency = 0.795 Constraint = 0.149, Hierarchy = 0.086) are both at the location of structural holes. So, more research should be carried out on green and cost-effective solutions for reducing organic pollutants in soil remediation. The current study identifies opportunities for innovations and breakthroughs in SPRT and offers relevant information on technological development prospects.

Experimental investigation of the axial crushing behavior of aluminum/CFRP hybrid tubes with circular-hole triggering mechanism

The current study investigates the axial crushing behavior of filament-wound aluminum/carbon fiber reinforced plastic (Al/CFRP) hybrid tubes with circular-hole triggering mechanism. The proposed hybrid design consists of an inner aluminum thin-walled tube and an outer composite winding of three plies having 30°/−30°/90° angles. The diameter, number, and location of the triggering holes were chosen as design parameters, and Taguchi L9 orthogonal array experimental design was used to find the best configuration of design parameters. For the optimization of multiple responses, Additive Ratio Assessment (ARAS) has also been utilized along with mono-criteria optimization. The experimental results showed that the intact hybrid tube can absorb up to 50% higher crush energy compared with the sum of individual components of the structure. The progressive brittle fracture pattern accompanied by progressive local buckling mode exhibiting favorable energy absorption characteristics were observed in all triggered configurations. Analysis of variance results showed that the trigger location ratio has the most significant effect on the specific energy absorption while the hole diameter was the most significant factor in decreasing the peak crush force. The results revealed that the specific energy absorption and the crush force efficiency of the intact hybrid tubes can be enhanced up to 39.1% and 61.7%, respectively, by the use of optimal levels of design parameters.

Investigating hole effects on bending performance of aluminum beams with square cross-sections under three-point bending load and their implementation in light vehicles

The bending behavior of beams with a square cross-section containing holes under a three-point bending load was investigated in the present study. As aluminum alloys are lighter than steel and there are many automobile companies that use this material, 6063 aluminum alloy was chosen for this study. The present research was carried out both experimentally and numerically. In the numerical section, aluminum beams were simulated with the finite element software LS-DYNA. These beams contained holes with a diameter of 21 mm, which were placed at different distances on the length of the beam. In this research, 36 perforated beams were simulated in three thicknesses: 1, 1.5, and 2, and the holes were placed at 0, 3.5, 7, 10.5, 14, 17.5, 21, 24.5, 28, 35, 42, and 49 mm in relation to the middle of the beam. In addition, a beam without holes was studied for each thickness. Numerical simulations were validated with experiments and good results were observed. The obtained results showed that as the hole moves from the center to the sides, the absorption of energy and maximum force increases. In the final section, the most optimal beams were determined in terms of thickness and hole location, and based on these a car bumper was proposed.

Analysis of the Failure Characteristics and Main Controlling Factors of Surrounding Rocks Using the Standard Specimen with a Pre-Existing Hole

To analyze the relationship between the butterfly-shaped plastic zone and stress in the rock with a single hole, we investigated the influence law of four factors, namely, the shape of the hole, the loaded confining pressure value, the bidirectional stress ratio, and the hole location on the volume of the butterfly-shaped plastic zone of the standard specimen with a single hole based on the orthogonal test and numerical simulation. The results show that: (I) The bidirectional stress ratio has a significant effect on the size of the plastic zone of the rock with a single hole, while the shape of the hole has no effect. (II) The basic value of confining pressure can weaken the sensitivity of the bidirectional stress ratio required to generate the butterfly-shaped plastic zone, that is, when the confining pressure value increases, the bidirectional stress ratio required to generate the butterfly-shaped plastic zone decreases, but there is always a certain value for the infinite expansion of the plastic zone. (III) The plastic zone of the rock with a single hole has a butterfly-shaped invariance, which means that the failure form of the surrounding rock around the hole will eventually evolve into a butterfly-shaped plastic zone under the state of a non-uniform stress field that reaches a certain bidirectional stress ratio. The research results of this paper have guiding significance for the stability control of the surrounding rock in underground engineering under the non-uniform stress field environment.

PO48 Presentation Time: 10:00 AM: Clinical Implementation of an In-House Made Perineal Template for Low Dose Rate Prostate Brachytherapy Treatment

<h3>Purpose</h3> An in-house perineal needle-template device was developed to improve the interactive¹ low-dose-rate (LDR) brachytherapy treatment planning process for patients with small prostate volume size. One of the side effects of external beam radiation and androgen deprivation therapies is the significant reduction of the prostate gland volume (target) which can be challenging to plan with a standard 5mm hole spacing template. The new perineal needle template (new template) has additional rows with holes placed in a 2.5mm off-set grid pattern which provided more hole locations to place seeds inside the small prostate periphery region for a more conformal plan while meeting all dosimetric planning goals. <h3>Methods and Materials</h3> Thirty patients with different prostate gland volumes size were selected for this study. These thirty patients received either external beam radiation alone or external radiation combined with androgen deprivation therapy. Patients had LDR interactive planning performed using the new template, BARD I-125 seed model STM1251 (USA, IL), BARD QuickLink Delivery System for the seed train assembly, Oncentra - Prostate (Elekta, Sweden) for the treatment planning software (TPS) and the B-K Medical Ultrasound 3000 (USA, MA) for the internal organs imaging. On implant day (DAY 0), the radiation oncologist (physician) contoured target, urethra and rectum on TPS. The medical physicist proceeded to start the planning on the TPS using the inverse planning option to create plan and dose volume histogram (DVH) as the first iteration. Then, manually adjusted and customized the seeds locations with the MD input for a final DVH evaluation in order to proceed and deliver the implant. The AAPM TG-64² dosimetric guidelines were followed and reported. All patients had CT and MRI imaging studies performed approximately 30 days after the implant for a DAY 30 post implant evaluation. Using the Oncentra TPS, both imaging studies were fused, and the prostate, urethra and rectum were contoured. The implanted seeds were registered, and the DAY 0 prescription was used for the post-plan evaluation following the AAPM TG-64 dosimetric guidelines. <h3>Results</h3> Thirty patients were successfully treated using the new template. The new template was modeled in TPS and the ultrasound system. The new template did not affect the calculating time in the TPS and the increased amount of hole locations provided more options for an easier manual optimization "tweaking" to achieve a final plan, especially in the apex location where the target tapers down in size. Initially, physician adaptation to the new template was challenging for the first few cases but rapidly improved as the physician became more familiar with the new hole patterns. <h3>Conclusion</h3> We have successfully designed, built and implemented a new template for brachytherapy LDR treatments of small sizes targets (≤20 cc). The new template has provided a viable option to implant the seeds inside or closer to the target periphery thus improving the interactive planning process significantly.

Two-dimensional prediction of the superposition film cooling with trench based on conditional generative adversarial network

Nowadays, the film cooling strategy is widely adopted to cool down turbine blades and significantly extend their service life. To protect the turbine's structural integrity while improving its efficiency, the effectiveness of air film cooling needs accurate evaluation in engineering. This study investigated a classical flat-plate model with a trench hole under multi-row superposition conditions. However, conventional semi-empirical correlations are hard to predict well. Thus, a Conditional Generative Adversarial Network (CGAN) model was developed to predict the two-dimensional film cooling effectiveness based on the film cooling parameters. The CGAN model consists of a Gated Recurrent Units (GRU) network generator and a Convolutional Neural Network (CNN) discriminator. The depth and width of the trench, compound angle, hole location, and blowing ratio information are mapped to the flow history information. Based on the sequential information, the GRU generator predicted the wall film cooling effectiveness, while the CNN discriminator focused on identifying generated image being real or fake. The adversarial training process significantly improved the accuracy of the generator, and the generator is capable of predicting the wall film cooling effectiveness well.

Quasi-static strength and fatigue life of aerospace hole-to-hole bolted joints

Unlike hole coaxiality or other drilling defects, hole misalignment has never been a major concern in aeronautical structures as perfect bolt-hole alignment was ensured through the global assembly process. However, a new industrial philosophy called hole-to-hole, which aims to decrease industrial cost and time has bolt-hole misalignment as an unavoidable effect. A number of numerical studies have investigated the load distribution among fasteners of bolted composite joints in case of misalignments and has demonstrated significant impact on the static behaviour. Pylons are structural subcomponents joining the engines to the wings, that transmit high loads. Nevertheless, due to its dimensions, a pylon is a suitable structure for hole-to-hole assembly. This article presents the results of an experimental campaign on single-lap shear titanium bolted specimens with hole location errors. Several configurations of misalignment are examined and compared to a reference case with no defects. The static and fatigue strength results are studied for these different configurations. A comparative study of these results allows the impact of misalignment on the mechanical strength to be estimated in relation to the reference case, without defects.

Thermal Runaway Propagation in Li-ion Battery Packs Due to Combustion of Vent Gases

Accurate understanding of propagation of thermal runaway is of much importance for developing safe battery pack designs. Combustion of vent gases emerging from a trigger cell undergoing thermal runaway has not been studied in sufficient detail, even though the additional heat generated during combustion likely plays an important role in thermal runaway propagation. This work presents comprehensive numerical modeling and simulations of thermal runaway propagation in a pack of cylindrical cells. The model accounts for multiple coupled non-linear phenomena, including vent gas flow and combustion, radiation and thermal runaway. Non-premixed combustion of venting gas is modeled using k-ε turbulence model and finite rate chemical kinetics. Simulation results are shown to be in good agreement with experimental data for a benchmark turbulent non-premixed jet flame. Simulations show that hot combustion products are rapidly transported in gaps between cells, potentially leading to self-sustained thermal runaway propagation to adjacent cells. Results demonstrate the critical importance of combustion in determining the nature of propagation of thermal runaway. The vent hole location is identified as an important parameter that influences whether and the extent to which thermal runaway propagation occurs. This work contributes towards the practical understanding of thermal runaway safety of Li-ion battery packs.

Simulations of crack development in brittle materials under dynamic loading using the numerical manifold method

Crack development in brittle materials under dynamic loading is widely involved in engineering, in which crack initiation, propagation and coalescence are typical phenomena. The numerical manifold method (NMM) is a unified continuous-discontinuous numerical method employing two cover systems, namely, mathematical covers and physical covers, which encounters no difficulty in the numerical representation of continua and complex discontinuities within one framework. In the present work, NMM is developed for the simulation of crack initiation, propagation and coalescence problems in brittle materials under dynamic loading based on the tensile strength criterion and the Mohr-Coulomb strength criterion for tensile and shear cracking, respectively. Four typical examples including the splitting of a rock bar, the Kalthoff-Winkler experiment, the cracking in tensile loaded pre-notched rectangular plates and the double-hole blasting of rectangular plates are simulated. The numerically derived crack development results are compared with corresponding theoretical or experimental results. The mesh size sensitivity is discussed for the first two examples; the dynamic cracking mechanism in the rock bar example is investigated along with the stress wave propagation analysis; the influence of the initial crack and hole locations on the crack path in the tensile loaded pre-notched example as well as the effect of the guiding notch in the double-hole blasting example are studied. Results indicate that the crack initiation, propagation and coalescence in brittle materials under dynamic loading are quite satisfactorily reproduced by NMM.

The effect of longitudinal hole shape and size on the flexural behavior of RC beams

The building's electro-mechanical piping systems can pass through transverse or longitudinal holes inside the reinforced concrete (RC) secondary beams, thus increasing the available floor height. These holes induced a reduction in the beam stiffness and strength. This work analytically and experimentally investigates the impact of longitudinal hole shape on the flexural behavior of RC beams. The interaction between hole shape and hole location has also been studied. The test program includes nine beams with the same cross section dimensions and steel reinforcement. Holes have been made using two circular PVC pipes (50 and 75 mm in diameter), and wooden medium-density fiberboard (MDF) square tubes (50×50 mm) and rectangular tubes (50×100 mm). Each hole shape was installed at two locations (90 and 160 mm) from the top of the beam. All beams were tested to failure using a four-point bending test. The results show that the hole shape and size up to half the beam width does not affect the failure mode compared to the solid control beam. The reduction in the ultimate strength of hollow beams compared to the control beam depends on the hole shape and size, with a maximum reduction of 20%. The developed analytical models were validated using experimental test results and can be employed to accurately predict the full flexural behavior of hollow RC beams, including cracking, yielding, and ultimate moments/loads.

Electrosurgical knife with the water-jet function of tip-type during endoscopic treatment injection.

ObjectivesThis study aimed to objectively evaluate the water‐jet‐functioned electrosurgical knife injection performances in a desktop experiment.MethodsFive types of water‐jet‐functioned electrosurgical knives, including two injection styles of sheath‐type (A: DualKnife J, KD‐655L; B: FlushKnife, DK2620‐J‐B20S; C: Splash M‐Knife, DN‐D2718B; D: ISSEN, SN1650‐20) and tip‐type (E: ORISE ProKnife, M00519361) were evaluated. These knives were compared with an injection needle (Control: SuperGrip 25G) as a control. The injection speed under constant pressure and the injection efficiency for each knife against prepared porcine stomach mucosa were evaluated. The additional clear gel injections using an injection needle were observed using an indigo blue‐colored gel to evaluate the difference between the locations of water‐jet holes.ResultsFour types of knives, except for A, showed significantly higher water‐jet speeds (A: 0.79 ± 0.03 g/20 s, B: 2.56 ± 0.05 g/20 s, C: 3.09 ± 0.06 g/20 s, D: 2.86 ± 0.05 g/20 s, and E: 1.79 ± 0.03 g/20 s) compared to that of the control (1.21 ± 0.03 g/20 s). Meanwhile, significantly higher efficacy of injection was found in the tip‐type water‐jet function knife, second to the injection needle (Control: 37.2% ± 35.5%, A: 20.9% ± 20.2%, B: 1.1% ± 2.2%, C: 6.2% ± 12.6%, D: 12.5% ± 15.6%, and E: 33.3% ± 32.2%). An additional injection experiment revealed that the injection with a piercing tip into the gel could achieve sufficient additional injection inside the stacked clear gel.ConclusionsThe tip‐type water‐jet function electrosurgical knife is preferable for effective submucosal injection during endoscopic treatments.

Deviation of coordinates of small-dimension holes in fiberboard

ABSTRACT This paper aims at the influence of drilling conditions (feed rate and material type) upon the coordinates deviation (deviation from the nominal location) of holes in wood-based materials: high-density fiberboard (HDF), medium-density fiberboard (MDF), and hard fiberboard (HB). These were tested with drill bits of 0.5, 1.0, 2.0, and 3.0 mm. Coordinates deviation was measured with computer vision-based scripts. The conclusion obtained is as follows: drill coordinates deviation increases with feed rate and material hardness. Tool diameter influence is less obvious due to two factors: its slenderness and difficultness in the hole initiation process. The results obtained are generally in line with other works on micro-drilling and can be used as references for other wood-related works.

Uncertainty quantification of the superposition film cooling with trench using supervised machine learning

Film cooling technology is significant for aero-turbines development. However, uncertainty on operating and manufacturing conditions would put the high-pressure turbines at the risk of unexpected problems. To extend the service life of the gas turbines, it is necessary to conduct an uncertainty analysis of the effects of the geometry parameters at different blowing ratios on film cooling performance. A classical flat-plate film cooling model under the multiple-row superposition conditions with trench is investigated in this study. The uncertainty inputs included the hole location, depth, and width of the trench and compound angle, while the lateral-averaged film cooling effectiveness was seen as the output. To reduce the computational cost, a Multilayer Perceptron (MLP) model based on supervised learning is built to model the nonlinear regression between the film cooling parameters and the film cooling effectiveness. The computational Fluid Dynamics (CFD) method was utilized to provide the training dataset. After rigorous validation and comparison, the MLP model shows higher accuracy and performance than other classical methods. Then the statistical flow and thermal characteristics of the film cooling outputs and variance were analyzed by the Monte Carlo simulation method. Results of sensitivity analysis show that the uncertainty of compound angle has the greatest effect at both low and high blowing ratios, followed by the location of the first row, trench width, and depth. Besides that, the hole pitch upstream gains more influence than those downstream. Also, both at low and high blowing ratios, the uncertain interval due to compound angle is the biggest, and the uncertain interval due to the hole location of the last row is the smallest. In the design and manufacturing process, it is believed that the uncertainty of compound angle, the hole location of the first row, depth and width of the trench should be paid extra attention to.

Two-stage container keyhole location algorithm based on optimized SSD and adaptive threshold

The automation transformation of container lifting operations is one of the main technical issues in Rail-Truck intermodal transportation. To solve this problem, this paper analyzes the advantages and disadvantages of several existing container positioning methods, and proposed a container corner holes location detection method based on lightweight convolutional neural network and adaptive morphological image processing algorithm. This method locates the container through a visual sensor that shoots from top to bottom. In order to improve the positioning accuracy and calculation speed while maintaining a high recognition rate, this method first uses a lightweight SSD detector to quickly detect the rough coordinates of the container corner hole in the image. On this basis, the smallest rectangle detection method based on adaptive HSV filtering is used to detect the precise coordinates of the corner hole in the image. Experiments show that the recognition rate of this algorithm in the initial positioning process reaches 94.2%, the recognition rate of secondary positioning reaches 87.4%, and the final positioning error is lower than 3.765 pixels and 2.81 pixels in the heading and lateral directions, respectively. The overall calculation time of the algorithm can realize the positioning calculation of 30 frames per second, which shows that this method takes into account the characteristics of high measurement accuracy and high calculation speed on the basis of high recognition rate.