Elongation Values Research Articles

Comparison of mechanical properties of polyethylene and polyurethane blocks as model materials for in vitro cortical bone modelling

Aims: The aim of this study was to compare polyethylene (PE) and polyurethane (PU) blocks at a density of 60 pcf in terms of flexural strength (FS), elastic modulus (EM), elongation, and hardness in vitro for use in cortical bone modelling. Methods: This in vitro study was conducted at Van Yüzüncü Yıl University Faculty of Dentistry Department of Orthodontics and the testing and laboratory phases of the study were conducted at Van Yüzüncü Yıl University Faculty of Dentistry Research Laboratory. PE (group 1) and PU (group 2) blocks with a density of 60 pcf (0.96 g/cm3) were used in the study. The 3-point bending test was performed on a universal testing machine and FS, EM, elongation, and hardness were measured. A total of 30 samples, 15 in the PU group and 15 in the PE group, were included in the study. Results: The FS and hardness values of PE and PU did not show statistically significant differences (p>0.05). Statistically significant differences were found between the PE and PU groups for EM and elongation values (p<0.05). Conclusion: This study showed that PE blocks can be used in orthodontics for in vitro cortical bone modelling.

Effect of Extensive Solar Ultra-Violet Irradiation on the Durability of High-Density Polyethylene- and Polypropylene-Based Wood-Plastic Composites.

The natural and laboratory-accelerated weathering of wood-plastic composites (WPCs) based on high-density polyethylene (HDPE) and polypropylene (PP) plastics was investigated in this study. Injection molded samples of WPCs with different loadings of wood fiber ranging from 0 to 36 wt.% of wood were subjected to laboratory-accelerated weathering and natural weathering. The integrity of samples weathered to different extents was tested using a standard tensile test and surface hardness test to investigate the dependence of these properties on the duration of weathering exposure. Tensile data were used to identify the loading of wood fibers in either plastic matrix that afforded superior ultra-violet (UV) stability. Tensile measurements under uniaxial strain yielded average values of tensile strength (TS), low-extension modulus (E), and elongation at break (EB). Both natural weathering outdoors and accelerated weathering in the laboratory showed that the TS and EB decreased while the E increased with the duration of exposure for all samples tested. The change in the average TS of composites with the duration of exposure offers valuable insights. The correlation between the tensile and hardness data for the WPC samples was explored. After naturally weathering at two exposure sites, the hardness of the WPCs was found to decrease between 8% to 12.5%, depending on the composition and exposure location parameters. Furthermore, no marked difference in performance with increasing wood fiber beyond 18 wt.% was observed. WPCs can be a key parameter in environmental sustainability by being used in the building and packaging industries, which reduces carbon emissions and waste generation.

Fracture Surface Morphology of the Impact-Loaded Tempered Spring Steels

The objective of this study is to evaluate the surface morphology of 51CrV4 and 55Cr3 spring steels after undergoing tempering and testing at various temperatures, with a focus on dynamic fracture behavior. For this purpose, 51CrV4 and 55Cr3 spring steel samples were normalized at 870°C for 30 minutes for the same initial microstructure. Then, samples were austenitized at 870°C for 30 minutes and rapidly quenched in oil following tempering at 300°C-525°C range for 2 hours. Tensile tests at room temperature were performed to identify tensile properties, especially percent elongation values. CharpyV notched impact tests were carried out at -40, 0, room temperature, and +80°C testing temperatures to examine the fracture surface morphology of steels according to heat treatment procedures and testing (environmental) temperature. The fracture surfaces were examined by micro and macro analysis, respectively achieved by a digital camera and a scanning electron microscope (SEM). Mix mode (ductile and brittle) fracture (quasi-cleavage type) was detected for all quenched and tempered steels. Increasing tempering and testing temperatures resulted in more ductile fractures with many dimple formations and fewer secondary cracks.

The Effect of Cotton Fiber Characteristics Tested by Uster H.V.I on Yarn Properties

In this study, the effects of cotton fiber characteristics, tested by Uster High VolumeInstruments (HVI) on the tenacity, elongation, unevenness, imperfection index (IPI) and hairiness values of the combed ring spinning yarns, were investigated in detail. Based on the experiments, it was found that an increase in fiber tensile strength and elongation leads to an increase in the specific tensile strength and elongation of the yarn; an increase in short fiber content and neps fiber materials leads to an increase in the unevenness, IPI of the yarn; an increase in the fiber length leads to a decrease the hairiness values of the yarn, etc. Information concerning the relative contribution of fiber characteristics to yarn properties is one of the important targets for the spinner to choose cottons that are best suited to the manufacture of specific end product.

APPLICATION EFFECT OF HAND MIXER AND OVERHEAD MIXER ON MIXING PERFORMANCE FOR THE MANUFACTURE OF ARTIFICIAL LEATHER

The mixing process is necessary for the manufacture of a product, one of which is the manufacturing process of artificial leather. The mixing process in the manufacture of artificial leather aims to mix raw materials and additives such as fillers, stabilizers, plasticizers, and others. The mixing process is carried out using a mixer. This study aims to determine the effect of using mixers that have different specifications. The mixer used is the Hand Mixer Miyako SM-625 with the Overhead Mixer IK RW 20. Both of these mixers have differences in speed and type of agitator.From the results of organoleptic test, both of these mixers there was no difference. But the results of the physical test showed that the values of tensile strength, elongation, and tear strength were higher when using the IK RW 20 Overhead Mixer. This indicated that both mixers could be used in the manufacture of artificial leather, but to obtain measurable test results, using the IK RW 20 Overhead Mixer was recommended, seen from the difference in each of the physical test parameters.

Enhanced Mechanical Properties Via the Incorporation of Ti in Cu Alloys

The influence of Ti addition on the microstructure, mechanical properties and electrical conductivity of Cu-14Fe alloy is studied. Great emphasis has been laid on the second phase, texture and mechanical properties. No new phase other than α-Fe phase could be found in Cu-14Fe-0.1Ti alloy using XRD and SEM. With 0.1Ti addition, the distribution of α-Fe phase strip is slightly heterogeneous. Cube, s and brass texture components are largely strengthened in Cu matrix with Ti addition, while copper and goss texture components are rare in Cu matrix of both alloys. In α-Fe phases, α fiber and goss texture components are highly strengthened with Ti addition. It is found that enhanced mechanical properties are achieved in Cu-14Fe-0.1Ti alloy. In detail, with Ti addition, the yield strength and ultimate tension strength increase from 538 and 561 MPa to 580 and 583 MPa, respectively, while maintaining a high value of elongation to failure (6.5%). A lower equivalent grain size and a higher KAM value mainly contributes to the higher yield strengthening effect in Cu-14Fe-0.1Ti alloy. The lower equivalent grain size is derived from the small size distribution range and the small size of Cu matrix in Cu-14Fe-0.1Ti alloy. The dissolution of Ti and formation of nano second phases also improve mechanical properties. However, texture hardly plays a role in the strengthening effect. 0.1Ti addition hardly reduces the electrical conductivity of Cu-14Fe alloy, maintaining a value of 33.43% IACS. The results in this work could provide guidance in texture evolution and property evaluation in Cu-Fe alloys.

Extraordinary Mechanical Properties of a Field‐Assisted Sintering Technique/Spark Plasma Sintering Consolidated Stainless Steel with High Copper Content of 9 wt%

The solidification behavior of a novel X1CrCuNiN 18‐9‐6 (concentrations in wt%) stainless steel is studied by thermodynamic calculations and corresponding microstructure investigations. The thermodynamic calculations of the X1CrCuNiN 18‐9‐6 steel predict a metastable austenitic structure, which is verified by microstructural analyses. In the as‐cast state before heat treatment, a few copper precipitates, mostly over 50 μm in size, are visible, which are located exclusively in the interdendritic regions. The electrode inert gas atomization process is applied to produce a steel powder using a pre‐material in as‐cast state with significantly increased Cu content of 9 wt%. After atomization, despite the rapid cooling, micrometer‐sized copper precipitates form again, which are homogeneously distributed in the microstructure, but are mostly less than 10 μm in size and thus much finer than in the initial cast state. The short processing times during field‐assisted sintering technique/spark plasma sintering makes it possible to produce a bulk material with a porosity of less than 1%. Miniature samples produced from the as‐sintered material exhibit uniform elongation values of 30%–40% with a tensile strength of about 640 MPa under tensile loading conditions.

Effect of Elevated Temperature on Microstructure and Mechanical Properties of Hot-Rolled Steel

The mechanical properties and microstructure of hot-rolled steel are critical in determining its performance in industrial applications, particularly when exposed to elevated temperatures. This study examines the effects of varying temperatures and soaking times on these properties through a series of controlled experiments. The primary objective was to optimize the key response parameters, including tensile strength, yield strength, and elongation, by analyzing the influence of temperature and time. A full factorial design approach was used, applying the desirability function theory to explore all possible combinations and identify optimal processing conditions. The experimental results showed that the soaking time played a critical role, significantly influencing the mechanical properties with an impact ratio of 62%. The microstructural analysis displayed that higher temperatures and longer soaking times resulted in the formation of coarser ferrite and pearlite grains, contributing to a decrease in strength and an increase in ductility. The optimum process condition - 650 °C for 60 min - produced the highest values for tensile strength (400.32 MPa), elongation (36.78%) and yield strength (288.52 MPa). The study also highlighted the temperature-dependent nature of the mechanical behavior of hot-rolled steel. While tensile strength and yield strength initially increase with temperature, prolonged exposure, particularly at 600 °C and 750 °C, results in significant grain coarsening and a corresponding degradation of these properties. Conversely, elongation improves at moderate temperatures (150 °C to 300 °C) but decreases with prolonged exposure, especially at higher temperatures. These findings underscore the importance of precise control of thermal processing parameters to optimize the mechanical properties of hot-rolled steel. The findings offer significant insights that can be leveraged to optimize material performance in industrial applications, where thermal exposure is a critical consideration.

Bioplastics based on waste paper cellulose, glycerol, and chitosan: the evaluation of mechanical properties

Abstract Bioplastics are an alternative to conventional plastics to overcome environmental problems due to the accumulation of plastic waste. Cellulose is one of the materials that can be used as reinforcement for natural polymer-based bioplastics. One material that has a very high cellulose content is waste paper. This study was conducted to make bioplastics based on waste paper cellulose, glycerol, and chitosan. The mass of waste paper cellulose was the variable that varied in this study. The parameters of mechanical properties evaluated in this study include tensile strength, elongation, degradation rate, and water absorption. The results showed that increasing the mass of added cellulose increased the tensile strength value of bioplastics but decreased the elongation value. The results also show that increasing cellulose mass can reduce the water absorption of bioplastics produced. The sample with the highest tensile strength value is the addition of 3 grams of waste paper cellulose, with a tensile strength value of 1.99 MPa and an elongation of 4.4%.

Laser powder bed fusion of a composition-modified IN738 alloy based on thermodynamic calculations

Defects, particularly cracking defects, severely limit the application of Ni-based alloys fabricated via the laser powder bed fusion (LPBF) additive manufacturing process. To address the processability/strength trade-off, in this study a new Ni-based alloy (IN738M) was designed via thermodynamic calculations based on the traditional IN738 alloy. The processability, microstructure, phase precipitation behaviour and mechanical properties were systematically examined. The results demonstrate that the LPBF-fabricated IN738M exhibited excellent LPBF processability, achieving crack-free fabrication even with a high γ′ phase mass fraction. The compositional modifications led to improvements in the microstructure, including the formation of a quasi-continuous carbide network at the interdendritic regions, altered grain orientation and grain refinement. This study also proposes a heat treatment strategy to achieve a bimodal distribution of the γ′ phases for IN738M; the cellular structure was eliminated, with numerous MC-type carbides observed within grains and at the grain boundaries. The IN738M alloy exhibited a superior combination of ultimate tensile strength values (1462 ± 23 MPa) and elongation values (10.2 ± 0.4 %) at room temperature compared to the IN738 alloy (932 ± 35 MPa and 2.6 ± 0.3 %, respectively). These findings will provide valuable guidance for developing Ni-based alloys with enhanced LPBF processability and mechanical properties.

Tensile and Crystallization Behavior of Melt‐Spun Fibers Derived From Poly(Butylene Terephthalate‐Co‐2,6‐Naphthalate) Copolyester

ABSTRACTIn this study, a series of poly(butylene terephthalate‐co‐2,6‐naphthalate) (PBTN) copolymers was synthesized via a one‐step polycondensation process. These PBTN copolymers demonstrate excellent thermal stability and semi‐crystalline behavior, with the enthalpy of melting values exceeding 17 J g−1. Crystallization kinetics analysis revealed that the copolymers exhibit significantly higher crystallization rates than neat poly(butylene terephthalate) (PBT) and poly(butylene naphthalate) (PBN), making them well‐suited for fiber production. The copolymers were melt‐spun, followed by a post‐drawing process at a ratio of 2.0, to enhance fiber strength. By adjusting the 2,6‐naphthalene dicarboxylate (NDC) content, the mechanical properties and crystallinity of the PBTN fibers were fine‐tuned. Tensile testing revealed that the copolymer fiber containing 50 mol% NDC, post‐drawn at a ratio of 2.0, exhibits superior toughness, with maximum tenacity and elongation values of 3.13 g den−1 and 69.3%, respectively.

Surface integrity and mechanical properties of small elements fabricated through LPBF and post-processed with heat treatment and abrasive machining

The present research analyzes the impact of heat treatment atmosphere followed by finishing surface machining of small elements of Inconel 939 fabricated through laser powder bed fusion (LPBF). The analysis involved annealing in two gas mediums, solution treatment, and aging to achieve the desired microstructure and mechanical properties. The finishing surface was performed using various variants of abrasive machining. A more than fivefold reduction in the average roughness height Ra from 5.6 µm to 1.15 µm was achieved using metal balls as an abrasive, which was required for further processing. Residual stress tests have shown that due to heat and abrasive treatment, tensile stresses change into compressive ones. After printing, samples are characterized by tensile residual stresses on the surface (+ 428 MPa), while after heat treatment, compressive stresses occur (− 179 MPa). Abrasive machining with metal balls increases the value of compressive stresses to − 464 MPa. In addition, the impact of post-processing on the microstructure of Inconel 939 was discussed in terms of mechanical properties. The yield strength of 1184 MPa and elongation values of 19.3% were obtained for samples after HT in an argon atmosphere and abrasive machining with a ceramics roller. These studies provide valuable new information on the effective heat treatment and optimization of the finishing machining of Inconel 939, especially in achieving the desired surface roughness, microstructure, and mechanical properties for aerospace applications.

On the work-hardening behaviour of the additively manufactured Al-Si-Mg alloys: Composite-like versus networked microstructure

Al-Si-Mg alloys are widely used for manufacturing components via laser powder bed fusion in various industrial applications where ductility and the capacity to accommodate the strain hardening are key criteria. The ductility of the laser powder bed-fused Al alloys has become a crucial property due to their fine cellular microstructure. Post-processing heat treatments improve ductility, but resultant microstructural changes affect the work-hardening behaviour, deformability, and uniform elongation values. This study aims to investigate the work-hardening capability, uniform elongation and deformability of AlSi7Mg and AlSi10Mg samples after different post-processing heat treatments by using tensile tests, optical and scanning electron microscopies. At aging temperatures below 200 °C, the fully cellular structure of eutectic Si governs both the work-hardening behaviour and the strengthening mechanisms, despite the precipitation phenomenon. When direct-aging temperatures exceed 200 °C, the coarsening of the Si-eutectic network modifies work-hardening behavior (Stages 1–3), accentuating the effects induced by the precipitates. Artificial aging highlights the role of precipitates in controlling both work-hardening properties and deformability.

Mechanical Properties of PVA/Alginate Membranes Fabricated using Electrospinning as A Wound Dressing

Alginate is an interesting natural biopolymer due to its many benefits and good biological properties. Observing the mechanical properties of PVA/Alginate fibers made by electrospinning machines can help predict their behavior and measure their performance under various conditions including applied external forces. Therefore, this study investigated the elastic properties of PVA/Alginate membranes, specifically tensile strength and elongation. The fabrication material used is PVA / Alginate solution with a PVA solution concentration of 20% and alginate solution 2.5%. The electrospinning process is carried out by optimizing at a voltage of 25 kV, the distance between the spinneret end and the collector is 15 cm, the flow rate is 130, and the spinneret diameter variations are 0.4 mm, 0.6 mm, and 0.8 mm. To determine the morphology of the fiber surface, observations were made using ocular microscopes and SEM. From this observation, it is known that the morphology formed using a 0.4 mm spinneret has the tightest structure among the three sizes of spinneret diameter. To determine the effect of spinneret diameter on the value of tensile strength and elongation, tensile strength tests are carried out. The tensile strength and elongation values of the membrane obtained with variations in spinneret diameters of 0.4 mm, 0.6 mm, and 0.8 mm are 1.96 MPa, 3.77 MPa and 6.11 MPa respectively and the elongation values are 17%, 52.7%, and 97%. With medical material standards, it has a tensile strength value between 1 MPa – 24 MPa and an elongation value between 17% – 207%, so that PVA / Alginate fiber membranes have the potential to be applied as wound dressings.

Investigating the influence of ferric oxide grade alumino‐silicate cenosphere particulates and heat treatment on the microstructural evolution and mechanical properties of Al6061/ferric oxide alumino‐silicate cenosphere (x weight %) composite

AbstractThe main aim of this investigation is to fabricate aluminum 6061 composites with three different weight percentages of ferric oxide grade alumino silicate cenosphere (1 wt.%, 3 wt.%, and wt.%) by the stir‐casting process. The fabricated cast composite and T6 heat‐treated composite is used to obtain a fundamental understanding of various weight percentages of the cenosphere and the influence of heat treatment on the microstructural changes, mechanical characteristics, the mechanism of fracture, and the interface between the aluminum‐matrix and ferric oxide grade alumino‐silicate cenosphere particulates. Tensile and compressive tests with a constant strain rate (0.5 mm ⋅ min−1) were carried out to study the strength and to find a correlation between the various weight fractions of cenosphere and heat treatment. Investigations of the changes in the microstructure of the aluminum ferric oxide grade alumino silicate cenosphere composite and the fractography of the fracture surface are investigated using optical and scanning electron microscope. X‐ray diffraction was utilized to confirm the results obtained from optical and scanning electron microscope analyses for phase characterization validation. A maximum of 30 % increase in hardness value, 20 % increase in tensile strength value, 33 % increase in maximum compressive strength value, and 2 % increase in elongation values are observed in heat‐treated composite when compared to cast composite.

Innovative techniques for developing hybrid yarns using different core insertion methods: A comparative study

Elastane fibers, in particular, have gained an important share in the production of elastic yarn. This research aims to evaluate innovative methods for developing hybrid yarns (dual core) by integrating core elements in various configurations to show the influence of different core-inserting techniques on yarn characteristics. The research developed a modified pulley (W-grooved roller) to insert core elements side by side along with the existing method during the yarn manufacturing process. Ne 16/1 yarn (dual core) was manufactured using five different core inserting techniques with cotton roving, polybutylene terephthalate (PBT), and elastane (Lycra®). The characteristics of the produced yarns were analyzed using standard testing methods. Statistical analysis was performed to determine significant variations in yarn properties using one-way MANOVA and the MOORA method was employed to determine the most suitable yarn configuration. The results indicate that yarn manufactured by inserting core components side by side significantly enhances the expected characteristics of hybrid yarns. Yarns manufactured by inserting core components side by side show higher strength, elongation, and lower hairiness values. This research introduces a novel technique for producing dual-core yarns by side-by-side insertion of core elements contributing to the development of innovative hybrid yarns.

Study on the properties of water-retted Cymbopogon citratus pseudostem fibres and their nonwoven fabric characteristics

Purpose This study aims to analyse cellulose fibres extracted from the pseudo-stems of Cymbopogon citratus and evaluate their properties in non-woven fabric production. Design/methodology/approach The water retting method was used for fibre extraction, and intrinsic fibre qualities were examined to assess their suitability for textile applications. A thermal bonding technique, using a hot press machine and polylactic acid powder as a binder, was applied for non-woven fabric development. Findings The retted fibres had an average length of 156 mm and a fineness value of 5.73 tex. The fibre’s tenacity and elongation values were 1.33 gf/denier and 12.78%, respectively. Fourier transform infrared analysis confirmed the presence of major cellulose components. The fibre’s crystallinity and friction coefficient were 50% and 0.3, respectively. C. citratus fibre exhibited hygroscopic characteristics with a moisture regain of 10.65%. Experimental non-woven fabrics (70% C. citratus fibre, 30% polylactic acid powder) demonstrated consistent weight and thickness, with variations in tensile strength. Moisture regain values for non-woven fabrics were approximately 7.6%. Originality/value The features of C. citratus fibre, obtained with the water retting process, exhibited suitability for textile applications. Three experimental non-woven fabrics comprising of C. citratus fibre and polylactic acid powder were produced with three different pressing temperatures. The tensile strength properties of these fabrics were influenced by pressing temperature.

Effect of bell annealing on the interface microstructure and mechanical properties of titanium/steel composite plates prepared by hot rolling

This study investigates the effect of bell annealing (600 °C–750 °C/3 h–15 h) on the interfacial microstructure and mechanical characteristics of hot-rolled titanium/steel (Ti/steel) bi-metallic plates, aiming to improve their mechanical performance and deformation compatibility. The interfacial bonding mechanism and growth process of the interfacial TiC layer were studied using multi-scale characterization. The microstructural evolution during annealing and the effect of the TiC layer on element interdiffusion were considered. Results show that the TiC interlayer inhibits Ti and Fe diffusion, preventing undesirable Ti-Fe phases, and the TiC layer thickens towards the Ti side. Higher annealing temperatures and longer times worsened the grain size difference between the Ti and steel layers and produced a thick TiC layer, severely degrading deformation compatibility. Microcracks, caused by severe lattice mismatch, are mostly initial at the α-Fe/TiC interface during plastic deformation. Thin to moderate TiC layers resulted in a combination of ductile and brittle fractures, while thick layers led to brittle fractures. In terms of mechanical properties, the ultimate tensile strength (UTS), yield strength (YS), shear strength, and elongation (EL) of the hot-rolled composite plate were measured at 337 MPa, 232 MPa, 238 MPa, and 29 %, respectively. All annealed samples exhibited a reduction in UTS, YS, and shear strength compared to the hot-rolled state; however, they demonstrated improved EL and deformation compatibility, with the elongation achieving its optimal value at 650 °C-3 h. The annealing, at 650 °C for 3 h, was identified as the optimal condition for post-rolling heat treatment, resulting in a composite plate with a comprehensive mechanical performance characterized by UTS, YS, shear strength, and EL values of 267 MPa, 127 MPa, 171 MPa, and 46 %, respectively.

Anisotropy in tensile properties of a high strength metastable β titanium alloy

High strength metastable β titanium alloys are widely employed in the aircraft industry due to their outstanding strength-to-weight ratio. While components can endure complex in-service mechanical loading, the anisotropy in tensile properties has been the subject of limited attention. In this study, its origin was investigated focusing on the role played by millimeter scale β grains as they were recently identified as a source of heterogeneous deformation. Tensile properties of Ti-10V-2Fe-3Al processed via different thermomechanical routes were assessed using multiple sampling directions. In particular, elongation values were observed to vary significantly depending on the testing direction. A combination of SEM, EBSD, µ-CT and in-situ DIC during tensile tests was employed to clarify the underlying causes of this behavior. Substantial differences in strain heterogeneity and localization were found related to features of β grains, including their crystallographic and morphologic orientations. Furthermore, multiple fracture mechanisms were observed to derive from the differences in deformation behavior, and eventually compete to trigger specimen failure. Elongation values are then determined by both the degree of strain heterogeneity and the operating fracture mechanisms. These findings provide a new understanding of the role of the microstructure in the tensile behavior of high strength metastable β titanium alloys.

Influence of parboiling conditions on rice grain quality characters and insect infestation with rice weevil (Sitophilus oryzae. L) of some rice cultivars

Parboiling improves rice grain hardness and reduces susceptibility to Sitophilus oryzae infestation by gelatinizing the starch and enhancing resistance.A newly designed electric machine was used to parboil four Egyptian rice cultivars—Sakha 108, Giza 178, Super 300, and Egyptian Yasmin—at 70, 75, and 80 °C and determine their susceptibility to Sitophilus oryzae L. (Coleoptera: Curculionidae) infestation. Results indicated that heating affected most traits in all four rice cultivars during both study seasons 2021 and 2022. Super 300 rice cultivar exhibited the highest hulling values (81.23 and 81.42%) when heated to 80 °C, while the Yasmin rice cultivar showed the lowest values for hulling (77.66 and 77.45%) at 70 °C. while Giza 178 cultivar showed a significant decrease in broken percentage (90.85 and 94.02%) compared to control when heated to 80 °C. The results also indicated that the Yasmin rice cultivar had the highest values for white belly, hardness, and gel consistency at 80 °C, while the Sakha 108 cultivar showed the lowest values for these traits at 70 °C. Furthermore, the protein, elongation, and water uptake characters significantly responded to the different investigated treatments. Yasmin cultivar at 80 °C showed the highest significant values for protein (9.26 and 9.47%), elongation (65.02 and 65.44%), and water uptake (453.2 and 455.1 ml water/100 g milled grains) in both seasons. Sakha 108 cultivar had the lowest values for these traits at 70 °C. The S. oryzae insects responded differently to the rice cultivars. Using Dobie’s Index of Susceptibility, all cultivars were classified as resistant to S. oryzae infestation. Super 300 was moderately resistant before parboiling but resistant after heat treatment. In conclusion, the study underscores the influence of pre-storage parboiling on rice weevil infestation, suggesting that heat treatment could serve as an effective control measure. These findings emphasize the importance of parboiling conditions in enhancing rice grain quality and bolstering resistance to insect infestation.