Standard Shape Research Articles

Numerical and experimental approach on vibration characterization of non-uniform hybrid sandwich plates

In this paper, the free vibrational response of various non-uniform composite sandwich plates with different hybrid honeycomb core types and varied weight percentages of multi-walled carbon nanotube (MWCNT) is analyzed experimentally and numerically. The governing differential equations of motion of the various honeycomb non-uniform composite sandwich plates are derived using higher order shear deformation theory and numerically solved. The various non-uniform fiber-reinforced composite face plate configurations were fabricated using the vacuum-assisted hand lay-up technique with the ply-dropping off at different domains to achieve different taper configurations. The honeycomb core was fabricated using a corrugated die, and hand lay-up method to yield various configurations. In the corrugated honeycomb core, apart from the standard hexagonal shape, composite laminated strips were longitudinally reinforced between the corrugated shape continuously and intermediately to increase the strength and damping property of the structure. The various weight percentages of R-COOH functionalized MWCNT were distributed homogeneously into epoxy using the titanium probe-assisted ultra-sonication method. Material properties such as Young’s modulus and Poison’s ratio, were evaluated for the face plate using ASTM E1876. An alternative dynamic approach was carried out to obtain the shear moduli along the corrugated direction (Gxz ) and joining direction (Gyz ) of the various core models with and without MWCNT reinforcement. An experimental and numerical investigation was performed on the various prototypes of non-uniform sandwich plates with various hybrid honeycomb core material to obtain natural frequencies and loss factors under various boundary conditions. The effect of MWCNT reinforcement in face sheet and various honeycomb core material, aspect ratio at various boundary conditions on the free vibration and transverse vibrational responses of the structure was also studied. It was found that the MWCNT reinforcement in the various honeycomb core materials increases the shear modulus considerably, thus enhancing the overall dynamic behavior of the various non-uniform honeycomb composite sandwich plates.

Multi-Objective Optimization of MEMS-based Box Pattern Microheaters Using Response Surface Method

We present a response surface method to evaluate multi-objective optimization for MEMS-based microheater design. Box pattern, the standard microheater shape, was selected in this study since it has a uniform temperature distribution compared to other patterns. The optimum parameters are used to obtain the maximum total current density and Joule heat. Based on a hybrid of the Response Surface Method and Central Composited Design, the model simulation emerged with 25 sets of Design Experiments. As expected, the voltage is proportional to the increased output temperature and Joule heat of the microheater. Material thermal conductivity, anchor length and thickness of the heating element are included as design variables for the optimization. The microheater thicknesses of 4.23 - 4.55 µm, length of 40 µm and thermal conductivity of materials of approximately between 52 to 66 Wm-1K-1 became the optimized results at 1 V input voltage to obtain a maximum Joule heat of 4.9x105 W/mm3 and total current density of 5.6x107 mA/mm2.

An Image Processing Approach to Quality Control of Drop-on-Demand Electrohydrodynamic (EHD) Printing.

Droplet quality in drop-on-demand (DoD) Electrohydrodynamic (EHD) inkjet printing plays a crucial role in influencing the overall performance and manufacturing quality of the operation. The current approach to droplet printing analysis involves manually outlining/labeling the printed dots on the substrate under a microscope and then using microscope software to estimate the dot sizes by assuming the dots have a standard circular shape. Therefore, it is prone to errors. Moreover, the dot spacing information is missing, which is also important for EHD DoD printing processes, such as manufacturing micro-arrays. In order to address these issues, the paper explores the application of feature extraction methods aimed at identifying characteristics of the printed droplets to enhance the detection, evaluation, and delineation of significant structures and edges in printed images. The proposed method involves three main stages: (1) image pre-processing, where edge detection techniques such as Canny filtering are applied for printed dot boundary detection; (2) contour detection, which is used to accurately quantify the dot sizes (such as dot perimeter and area); and (3) centroid detection and distance calculation, where the spacing between neighboring dots is quantified as the Euclidean distance of the dot geometric centers. These stages collectively improve the precision and efficiency of EHD DoD printing analysis in terms of dot size and spacing. Edge and contour detection strategies are implemented to minimize edge discrepancies and accurately delineate droplet perimeters for quality analysis, enhancing measurement precision. The proposed image processing approach was first tested using simulated EHD printed droplet arrays with specified dot sizes and spacing, and the achieved quantification accuracy was over 98% in analyzing dot size and spacing, highlighting the high precision of the proposed approach. This approach was further demonstrated through dot analysis of experimentally EHD-printed droplets, showing its superiority over conventional microscope-based measurements.

Laboratory Study of Interface Friction between Sand and Steel Surfaces

Abstract In this study, results have been reported from a series of laboratory tests to determine the interface friction angle of steel surfaces with sand through modified direct shear testing. For completion, steel surfaces with different surface geometry to replicate the roughness have been slid against various sands compacted at different relative densities under both dry and wet conditions. The standard square shape direct shear box has been modified into circular and rectangular boxes to sufficiently enhance the contact area and to subsequently quantify its effect on interface friction angle. A mild steel interface of smooth and rough texture with a groove depth of 0.2 mm and tipping at an angle of 90° has been used in this study. The analysis of results revealed that the interface friction angles obtained from the standard direct shear box agree closely with those obtained from both modified rectangular and circular shear boxes. However, the ratio of the interface friction angle from the modified apparatus and soil’s angle of internal friction significantly depends upon the roughness of the surface in contact with the sand, its median particle size, and is independent of the effects of box size, soil’s relative density, and dry or wet condition. A comparison between existing well-accepted guidelines and current observations has been presented for use by the practicing engineers dealing with soil-structure interaction.

Hybrid method for enhancement of low-resolution ancient Kannada Stone Inscription images

In this paper, we proposed the hybrid-based method for the enhancement of low-resolution Kannada Stone Inscription images. To test the performance of the proposed method, a total of 110 low-resolution samples of Kannada stone inscription images were collected from internet sources for the experimental setup due to the non-availability of the standard datasets for the Kannada stone inscriptions. The collected data set samples from the internet were complex in nature to read the contents present on stone images. The experimental workflow of the proposed method is to separate the text and non-text regions from the stone inscription images using a proposed technique for setting the coordinates. Then, the preprocessing process starts to filter out the noises and other unwanted regions found in the image foreground region using the median filtering composition method. Finally, the hybrid approach is implemented using a Fuzzy adaptive thresholding technique for the elimination of the background region of the input image and smooth enhancement of Kannada stone inscription images due to enormous challenges related to perspective distortion, diverse lighting conditions, the minimal disparity between the foreground and background, a lack of standardized text size and shape, reduced perceptible colour contrast, and associated noises. Hence, we obtained an enhancement accuracy of 78.18% using a hybrid method. The obtained accuracy is more acceptable compared to existing methods found in the global literature and is also carried out during the experimental study. The novelty of the paper is working on low-resolution ancient Kannada stone inscription images and a hybrid approach to enhance the quality of the original input image.

Rosen-Morse potential and gravitating kinks

We show that in a special type of two-dimensional dilaton-gravity-scalar model, where both the dilaton and the scalar matter fields have noncanonical kinetic terms, it is possible to construct kink solutions whose linear perturbation equation is a Schrödinger-like equation with Rosen-Morse potential. For this potential, eigenvalues and wave functions of the bound states, if had any, can be derived by using the standard shape invariance procedure. Depending on the values of the parameters, the stability potential can be reflective or reflectionless. There can be an arbitrary number of shape modes, but the zero mode is always absent.

Nonlinear step responses and how to find them

The unit step response is a standard tool for experimental identification; its shape is equivalent to a solution of an appropriate governing equation. In this study, we investigate two variants of nonlinear first-order governing equation, y′=k(1-yβ)/β, and mainly its rescaled version y′=k1-yβ. We explore a continuum of response shapes, ranging from constant zero to constant one, including standard shapes such as 1-exp(-t) and tanh(t), but also uncommon shapes such as a part of the logarithmic integral. Two methods for estimating the parameter β are proposed: one based on analyzing the curvature of a single response and the other based on analyzing initial slopes for multiple responses, while varying the amplitude of the step. Our investigation is conducted in the context of gas permeation through a homogeneous porous medium, where nonlinear response shapes have been observed. This context allows for a meaningful interpretation of the results, consistent with expectations for specific thermodynamic processes. However, neither method is constrained by this context, and either might be considered for any first-order system that fails to have amplitude-scale invariance or for which the shapes seem to exhibit an effect of saturation.

Redesain Kursi Roda Portable untuk Lansia dengan Pendekatan Participatory Ergonomic

This study aims to redesign portable wheelchairs for the elderly at RS Charitas KM 7 Palembang using a participatory ergonomic approach. At the age of 60 and above, the elderly are vulnerable to diseases affecting mobility, requiring ergonomic assistive devices such as wheelchairs. The research was conducted from May to June 2024 using primary data collection through questionnaires given to elderly wheelchair users at RS Charitas and secondary data from relevant literature. Validity and reliability tests of the questionnaire were conducted using SPSS version 25. The results showed that the functional characteristics of the wheelchair (standard shape, adjustable and foldable, additional activity functions, footrests, flat surfaces, metal handles, and easy to clean) significantly affect the comfort and ease of use of the wheelchair. The regression model used is quite good at explaining variations in the dependent variable, although there are other factors outside the model that also influence the comfort and ease of use of the wheelchair.

Investigating the impact of notch shapes on oxide–oxide ceramic matrix composites strength: A computational approach

AbstractThis study utilizes finite element analysis (FEA) to explore the effect of standardized notch shapes—triangular, circular, and rectangular on the tensile behavior of oxide–oxide (O–O) ceramic matrix composites (CMCs) across various temperature ranges. Findings reveal that unnotched samples exhibited a superior equivalent stress of ∼425 MPa, closely aligning with experimental values. However, under elevated temperatures of 1000°C and 1200°C, degradation occurs, reaching up to 54% decrease at 1200°C. Notched samples demonstrate similar behavior, with all notches acting as stress concentrators. Analysis of single and double notches highlights that circular notches have the most significant stress concentrators due to their smooth surfaces and lack of sharp edges, in contrast to rectangular and triangular notches. Although all notch types influence stress concentration, the absence of non‐sharp corners in circular notches limit stress dissipation, resulting in higher stress concentrations. This trend persists under high temperature as well. The study emphasizes the critical need for a thorough assessment of notch effects, considering their position, orientation, shape, and size, as they significantly affect the mechanical properties of O–O CMCs.

Diverse soliton wave profile assessment to the fractional order nonlinear Landau-Ginzburg-Higgs and coupled Boussinesq-Burger equations

The space–time fractional Landau-Ginzburg-Higgs equation and coupled Boussinesq-Burger equation describe the behavior of nonlinear waves in the tropical and mid-latitude troposphere, exhibiting weak scattering, extended connections, arising from the interactions between equatorial and mid-latitude Rossby waves, fluid flow in dynamic systems, and depicting wave propagation in shallow water. The improved Bernoulli sub-equation function method has been used to achieve new and wide-ranging closed-form solitary wave solutions to the mentioned nonlinear fractional partial differential equations through beta-derivative. A wave transformation is applied to renovate the fractional-order equation into an ordinary differential equation. Some standard wave shapes of multiple soliton type, single soliton, kink shape, double soliton shape type, triple soliton shape, anti-kink shape, and other types of solitons have been established. The more updated software Python is used to display the solutions by using 3D and contour plotlines to describe the physical significances of attained solutions more clearly. The findings of this study are straightforward, adaptable, and quicker to simulate. It has been notable that the improved Bernoulli sub-equation function method is practical, effective, and offers more sophisticated solutions that can help togenerate a large number of wave solutions for various models.

Landmark registration in CT for lung model approximation in EIT

Abstract For the visualization of pulmonary ventilation with Electrical Impedance Tomography (EIT), most devices rely on generalized reconstruction models. Yet, fixed thorax dimensions, predetermined electrode locations, and standard lung shapes lead to multiple sources of EIT imaging distortion. The following work compares reconstructions of a library model, a practical model based on landmark fitting, and a detailed model based on manual segmentation. CT images of five pigs were segmented into torso surface, electrode positions, and lung borders. Practical models were created with reduced data, registration, and fitting. Detailed models were created by using the complete segmentation data. After EIT reconstruction and tidal image calculation, the overlap of CT lung segmentation and ventilated voxel was calculated. Compared with the results of a standardized model, the practical model reached an average ventilation/segmentation-overlap difference of an additional 12 %, and the detailed model achieved an average difference of 10 %. In conclusion, the shift of reconstructed impedance towards the segmented lung region is similar in both models when compared to the standard model, while the practical model requires a considerably less amount of information.

Ground heat exchanger design tool with RowWise placement of boreholes

Simulation-based design tools have been used since the late 1980s for designing vertical borehole ground heat exchangers (GHE) used with ground source heat pump (GSHP) systems. The ground heat exchanger simulations used in these tools rely on thermal response functions known as g-functions. Because of the significant computational burden in computing g-functions for even a single configuration, the design tools have relied on libraries of pre-computed g-functions. These g-functions were available for standard configuration shapes, such as lines, rectangles, open rectangles, L-shapes, and U-shapes. Standard shapes are often sub-optimal. For any building on a site, the available land may preclude use of a standard shape. For large GSHP systems with significantly imbalanced annual heat rejection and extraction loads, large rectangular fields may experience significant heat build-up (or heat draw-down) in the interior of the field. This paper describes a new ground heat exchanger design tool capable of automatically selecting and sizing both standard and irregular configurations. The focus of this paper is a method for creating, selecting, and sizing irregular configurations where the available land area and “no-go” zones are described as irregular polygons.

Bioenergetic analysis and anthropometric evaluation of bra-breast interface for improved design and breast health

Bioenergetics analysis of bra-breast Interface is an important technique for improving the design of bras and promoting breast health and comfort during physical activity. The objective of this study is to evaluate the compatibility between the anatomy of the breasts and bra. The study encompasses breast anthropometry via measurement. A measurement topology was proposed to determine breast mass, volume, shape, and asymmetry under loading (with-bra) and unloading (without-bra). Using the anthropometric data, the bioenergetics of the breasts were determined and compared to the rest of the body. From the bioenergetic analysis, a larger breast could require up to 69 J of energy during walking. The average mass of a breast ranges from 500 to 1000 g. Assuming breast shape to be standard, semi-conical, semi-spherical and semi-elliptical, breast volume was determined where semi conical and semi spherical breast shapes consistently predicted lower bound volume for each breast, whereas the standard and semi elliptical breast shapes predicted higher volume for the same breasts measurements. Mathematically, the medial-lateral boundaries of the breast were described by a secant of a curve, aligned on the coronal plane, causing eccentric loading when the two breast nipples were on different transverse planes. When this variation was more than 5% volume change, asymmetric breast shapes occurred and was responsible to displace bra heterogeneously compromising fit and support. A non-linear, leaf-function describing the relationship between the breast radius and volume invoked at a given body weight. In general, the current design for a bra assumes that the breasts are symmetrical, though the current investigation proves that this is not the case. The bra needs to be redesigned to better fit women, since left and right sides are not symmetrical. This is a significant problem today, as it is estimated that nearly 80% of women wear incorrectly- sized bras; 70% wore bras that are too small, and 10% wore bras that are too big. Current investigation highlights the crucial importance of incorporating the distance between the nipples into bra design to achieve optimal support, comfort, symmetry, and minimize breast movement. It ensures that the bra cups are positioned optimally to provide effective support and enhance the natural shape of the breasts. If the current bra models are redesigned, the amount of discomfort in women could potentially decrease.

A cortical surface template for human neuroscience

Neuroimaging data analysis relies on normalization to standard anatomical templates to resolve macroanatomical differences across brains. Existing human cortical surface templates sample locations unevenly because of distortions introduced by inflation of the folded cortex into a standard shape. Here we present the onavg template, which affords uniform sampling of the cortex. We created the onavg template based on openly available high-quality structural scans of 1,031 brains—25 times more than existing cortical templates. We optimized the vertex locations based on cortical anatomy, achieving an even distribution. We observed consistently higher multivariate pattern classification accuracies and representational geometry inter-participant correlations based on onavg than on other templates, and onavg only needs three-quarters as much data to achieve the same performance compared with other templates. The optimized sampling also reduces CPU time across algorithms by 1.3–22.4% due to less variation in the number of vertices in each searchlight.

Inhomogeneous broadening effects on bistable behavior in a hybrid optomechanical system

Optical bistability is investigated for optomechanical system composed of an ensemble of inhomogeneously broadened two-level atoms embedded between the two mirrors of the optical cavity, that is subjected to two input (strong and probe) fields. We consider two types of inhomogeneous broadened distributions, namely, Lorentzian and Gaussian line shapes. The first order harmonic components of the output fields (due to the presence of probe field) show reversed and knotted bistability shapes simultaneously with the standard bistable shape of the fundamental component of the field at frequency ωc\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\omega _{c}$$\\end{document}. The inhomogeneous broadened line width for both Lorentzian and Gaussian distribution affects the dispersive switching of the system, as well as the bistable behavior. Locations of the maxima of photon numbers associated with higher harmonics of the output fields are identified with respect to the probe field frequency.

Quality Evaluation and Flavonoid Content of Honey from Riau Forest, Indonesia

Honey is a naturally sweet liquid produced by bees from flower nectar, which varies in quality and flavonoid content due to the food source, environment and the bees that produce it. This study aims to evaluate the quality and flavonoid content of honey from the Riau Forest of Indonesia. Quality testing was conducted in accordance with SNI 8664:2018 with sensory, physical, chemical and microbiological parameters. Flavonoid testing was carried out qualitatively using HPLC. The test results showed that the sensory profile of honey was in accordance with the standard, sweet taste, distinctive aroma, brown colour and thick shape. Chemical parameters obtained values of moisture content of 21.92%, diastase enzyme 3.13 DN and HMF 4.14 mg/kg have met the requirements. However, the reducing sugar of 54.1% is still below the requirement. Heavy metal parameters (Pb, Cd, As and Hg) were not detected and microbiological ALT 3.0 x 10 and yeast mould <10 colonies/gr that have met. Furthermore, the results of flavonoid qualitative tests detected several types including Luteolin, Mangiferin, Smiglanin, maltol, isoflavones, quercetin, Cnidimol C, Norcimifungin, Apigenin, Methyl ophiopogonanone B, Pectolinarigenin, Kusenol C, 3,5,6-trihydroxy-4',7-dimetoxyflavone and Lupinifoline. The conclusion of this study shows that honey from Riau forests fulfils most of the quality requirements and has a diverse flavonoid content.

Drone Shaped Fractal Antenna with Defected Ground Structure for RF Energy Harvesting Applications

A proposed multiband drone shaped fractal antenna (Antenna-1) is introduced in this paper that targets the most required frequencies used for radio frequency energy harvesting applications, including WLAN-2.4G, WLAN-5G, WLAN-6G, Mobile DCS1700, Mobile LTE and WIMAX services. A novel fractal shape is designed and combined with a standard square geometrical shape in order to implement the front patch of the antenna. The antenna is simulated with CST Studio Suite software and fabricated on FR-4 substrate. Different antenna stages with parametric study and optimization were implemented to get the best performance from the drone shape fractal antenna. The multiband (Antenna-1) supports six resonate frequencies (1.7155 GHz, 2.424 GHz, 3.36 GHz, 3.789 GHz, 5.843 GHz, 6.886 GHz) with peak gain of (2.83 dBi) at the frequency 2.45 GHz and a maximum bandwidth of (0.4281 GHz) at the frequency 5.8 GHz that make it a suitable antenna for radio frequency energy harvesting applications.

Tolerance for corruption and descriptive social norm: An experimental study of embezzlement.

Public tolerance for corruption within a society significantly influences the prevalence of corrupt practices, but less is known about how this tolerance evolves with social norms. This paper presents experimental evidences demonstrating that the descriptive social norm indicating widespread corruption can lead to increased tolerance for corruptive acts. We introduce an asymmetric information ultimatum game to simulate the interactions between embezzlers and citizens. Game theoretical analysis reveals that victims anticipating corruption will exhibit greater compliance with embezzlement when the offers are evaluated based on descriptive norms. To test the hypothesis, we employ a framing effect to induce variations in descriptive norms within a behavioral experiment. Although the treatment effect is significant only in the subgroup of student cadres, this subgroup demonstrated increased beliefs about embezzlement, greater tolerance for corruption, and a heightened propensity to embezzle when exposed to framings with hierarchical implications. This paper contributes to the corruption literature by examining the effects of descriptive norms on victims' responses to embezzlement. It offers a more comprehensive perspective on how social standards shape public opinions and corrupt actions, enhancing our understanding of the self-reinforcing nature of corruption.

Is there a role of calprotectin testing in the diagnosis of surgical site infections after total hip and knee arthroplasty? A preliminary study.

Recent studies have revealed the usefulness of synovial calprotectin (CLP) in diagnosing chronic periprosthetic joint infections (PJIs). However, there is still a lack of evidence to support the use of serum CLP in the diagnosis of early PJIs and surgical site infections (SSIs) after total joint arthroplasties (TJAs). The primary aim of this study is to investigate the standard kinetics of CLP concentrations in the blood during the very early postoperative period after non-complicated total hip arthroplasty (THA) and total knee arthroplasty (TKA). The secondary aim was to perform a preliminary comparison of CLP concentrations between non-infected patients and patients with recognized SSIs. A total of 64 consecutive patients who underwent primary THA and TKA were included in this prospective research. Sixty patients (30 THA and 30 TKA) were scheduled to determine the standard shape of the blood CLP curve and the expected concentrations during the first 5 postoperative days after non-complicated TJAs. In 4 additonal patients, early SSI was confirmed, and they were included in a separate SSI subgroup. Calprotectin demonstrated a linear increase during the first 5 postoperative days. Statistically significant differences in CLP concentrations between non-infected cases and SSIs were not observed. The preoperative median results with interquartile range (Q1-Q3) were 0.52 (0.39-0.64) mg/dL and 0.5 (0.47-0.52) mg/dL (p = 0.77), while post operation they were as follows: on postoperative day 1: 0.88 (0.53-1.3) mg/dL and 0.86 (0.62-1.1) mg/dL (p = 0.84), on postoperative day 3: 1.77 (1.29-2.08) mg/dL and 1.85 (1.70-1.95) mg/dL (p = 0.72), and on postoperative day 5: 2.32 (1.79-2.67) mg/dL and 2.56 (2.25-2.83) mg/dL (p = 0.55), respectively. Serial CLP measurements during the early postoperative period revealed a linear (statistically significant) increase in concentration to postoperative day 5 without an evident point of decrease. A significant difference in median values and the course of curve patterns between the non-complicated and SSI groups was not observed.

(100) AUXETIC TECHNIQUE APPLICATION DURING PENILE PROSTHESIS IMPLANTATION TO CORRECT DEFORMITIES IN PEYRONIE’S DISEASE: A CASE SERIES

Abstract Introduction Peyronie’s disease (PD) is characterized by a series of penile deformities including curvature, narrowing, and shortening, which are commonly associated with a reduction in both penile length and girth. Additionally, 43.5% of patients with this condition experience erectile dysfunction (ED), for which penile prosthesis implantation (PPI) is the recommended treatment. Recently, a new surgical treatment approach for correcting penile deformities has been published (Auxetic technique). This innovative method has the capability to correct any penile deformity, restoring both the length and girth of the penis without the need for grafting. Objective The objective of this study is to describe the initial application of the Auxetic technique in 16 cases of PD associated with ED. Methods From November 2019 to September 2023, 16 consecutive patients with PD associated with ED, with a mean age of 59 years (47 to 71 years), were enrolled in this study. They were submitted to penile prosthesis implantation after tunica albuginea incision using a new auxetic guide device to generate the standardized star shape incision on the corpora cavernosa. The incisions create a rotating triangles system, which generates the tunica albuginea expansion in two dimensions (longitudinal and transversal), resulting in tissue increasement, correcting the penile deformity [fig. 1]. During the surgery, measurements of penile length and girth, curvature degree, and the presence of hourglass deformity were recorded. At the conclusion of the procedure, the penis was reevaluated to confirm whether the deformity had been completely corrected. Additionally, intraoperative and postoperative complications were documented and classified using the Clavien-Dindo grading system. Postoperative patient satisfaction was also assessed. Results Among the 16 patients who underwent surgery, 8 presented with uniplanar penile curvatures, 8 with multiplanar curvatures, and 7 exhibited hourglass deformities. In multiplanar cases, curvature angles ranged from 40 to 110o across each plane. In uniplanar cases, the mean curvature angle was 74.3o, with a range from 60 to 90o. The mean reduction in penile circumference at hourglass deformity point was 1.2 cm, and the average subjective penile length loss was 2.6 cm. The average operative time was 134 minutes. No major intraoperative complications were observed. 6 patients received inflatable penile implants while 11 received malleable penile prostheses. Postoperatively, a total of 2 patients experienced complications: 1 was classified as Clavien-Dindo grade I, and one patient was classified as grade IIIa, requiring surgical correction for paraphimosis. Patients were discharged after 24–48 hours. The average increase in penile length was 1.8 cm, and girth expanded by 1.2 cm following the implantation of inflatable penile prostheses. Additionally, all penile deformities were successfully corrected after the auxetic incisions. No other complications were noted after a mean follow-up period of 22,8 months (6 to 52 months). 13 patients were very satisfied and 3 were moderated satisfied with the result and all of them would undergo the surgery again. Conclusions The results of this study demonstrate that the auxetic technique effectively corrected penile curvature and other deformities, restoring both penile length and girth during penile prostheses implantation. Disclosure No.