Experimental Techniques最新文献

{"title":"On the Cover: Torque Converter Dynamic Characterization Using Torque Transmissibility Frequency Response Functions: Open Clutch, Hydro-Mechanical Responses","authors":"","doi":"10.1007/s40799-025-00835-z","DOIUrl":"10.1007/s40799-025-00835-z","url":null,"abstract":"","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 5","pages":"799 - 799"},"PeriodicalIF":1.9,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Cover: miniBLAST: A Novel Experimental Setup for Laboratory Testing of Structures Under Blast Loads","authors":"","doi":"10.1007/s40799-025-00819-z","DOIUrl":"10.1007/s40799-025-00819-z","url":null,"abstract":"","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 4","pages":"565 - 565"},"PeriodicalIF":1.9,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Cover: A Method for Dynamic Kolsky Bar Compression at High Temperatures: Application to Ti-6Al-4Vs","authors":"","doi":"10.1007/s40799-025-00805-5","DOIUrl":"10.1007/s40799-025-00805-5","url":null,"abstract":"","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 3","pages":"369 - 369"},"PeriodicalIF":1.5,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Exploration of Specific Wear Rate in Linear Reciprocating Motion Using Dimensional Analysis","authors":"P. Kumar,&nbsp;B. Kumar,&nbsp;S. Pratap","doi":"10.1007/s40799-025-00788-3","DOIUrl":"10.1007/s40799-025-00788-3","url":null,"abstract":"<div><p>Engineering components such as bearings, pistons, and sliding contact are subjected to wear losses, and understanding and quantifying wear rates are essential for designing and maintaining various engineering components. The present work employs a dimensional analysis to derive a relationship for finding the specific wear rate. A comprehensive investigation of wear was carried out using the linear reciprocating wear method through the lens of dimensional analysis. The dimensional analysis is a promising method for developing a relationship between the dependent and independent variables. A Taguchi L27 full factorial (3³) orthogonal array experimental design was considered in executing the experiment for the data collection. The developed mathematical relation was further validated with the experimental result, and the best-obtained result supports the experimental result with a 2.34% error.</p></div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 5","pages":"949 - 963"},"PeriodicalIF":1.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and Experimental Study of Tire Rolling Resistance Based on Rubber Energy Dissipation Mechanism","authors":"X. Gao,&nbsp;Z. Liu,&nbsp;H. Zhang,&nbsp;S. Wu,&nbsp;W. Fan,&nbsp;G. Zhang","doi":"10.1007/s40799-025-00790-9","DOIUrl":"10.1007/s40799-025-00790-9","url":null,"abstract":"<div><p>The rolling resistance of pneumatic tires is one of the important factors that affects the mechanical properties and fuel consumption of vehicles. This paper presents work the authors carried out in theoretical modeling and experimental research of tire rolling resistance. The aims of this research and paper are to reveal the active mechanism of tire rolling resistance, to develop a method of calculating the rolling resistance coefficients, and to research a new test method for measuring rolling resistance parameters. Firstly, the energy dissipation mechanism of tire tread rubber and the action mechanism of tire rolling resistance are analyzed. A hysteretic force model for tire tread rubber is developed based on the brush model framework. A tire rolling deformation detection system is subsequently designed by means of strain sensor technology. Furthermore, a novel calculation method for the rolling resistance coefficient and rolling resistance, integrating the rubber dissipative mechanism with the hysteretic force model, is presented. The findings indicate that an increase in the vertical load of the rolling tire leads to a reduction in rolling radius and an elongation of the rolling contact patch. Additionally, as both the vertical load and rolling speed increase, the tire's rolling deflection becomes more pronounced. A comparative analysis reveals that the discrepancy in rolling resistance between experimental and simulated results remains within 10%, thereby confirming the feasibility of the proposed tire rolling resistance model.</p></div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 5","pages":"937 - 948"},"PeriodicalIF":1.9,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fatigue Crack Deformation Field Measurement Based on Zoom 2D-DIC System and Incomplete Second-Order Shape Functions","authors":"J. Huang,&nbsp;X. Shao","doi":"10.1007/s40799-025-00791-8","DOIUrl":"10.1007/s40799-025-00791-8","url":null,"abstract":"<div><p>Fatigue damage represents a significant risk to the structural integrity of engineering components. However, current experiments on fatigue crack propagation struggle to fundamentally elucidate the mechanisms governing crack initiation and propagation. Based on the Digital Image Correlation (DIC) method, this article investigates techniques that effectively measure the displacement field at the fatigue crack tip. Methodologically, the traditional DIC displacement mode has been refined to introduce incomplete second-order displacement shape functions, findings indicate that a suitable incomplete second-order displacement function closely approximates the second-order shape function in terms of measurement accuracy, yielding an additional 12% improvement in measurement efficiency. Regarding instrumentation, the integration of an electrically tunable lens (ETL) into DIC is employed to establish a zoom Two-Dimensional Digital image correlation (2D-DIC) measurement system. This configuration effectively addresses the focusing challenge inherent in traditional small Field-of-View (FOV) 2D-DIC systems, facilitating efficient experimental measurements. Moreover, a speckle translation-based method is introduced for calibrating the distortion coefficients of zoom 2D-DIC, thereby alleviating the considerable calibration workload associated with ETL. Ultimately, the deformation field at the small-scale fatigue crack tip is measured to validate the practical utility of the developed measurement system and the effectiveness of the enhanced displacement shape functions.</p></div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 5","pages":"919 - 935"},"PeriodicalIF":1.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Joint Strength and Process Parameters in Aluminium-Stainless Steel by Electromagnetic Pulse Welding","authors":"A. Bhargav,&nbsp;M. Ahmed,&nbsp;K.S. Gavel,&nbsp;A. Ali,&nbsp;M. Lodhe","doi":"10.1007/s40799-025-00787-4","DOIUrl":"10.1007/s40799-025-00787-4","url":null,"abstract":"<div><p>Electromagnetic pulse welding (EMPW) is a solid-state joining technique for similar and dissimilar metals. In present work, analysis of the joining between aluminium (AA6061) and stainless steel (SS316) is attempted. A numerical analysis is carried out to establish the relation between electromagnetic and mechanical parameters such as current density, magnetic field, lorentz force, velocity, temperature, and load-bearing capacity. The aluminium alloy tube is joined with the steel rod at varying operating parameters such as voltage (19 and 20 kV), energy (30 and 36.1 kJ), capacitance (150 and 200µF), stand-off distance (1.0, 1.5, 2.0, and 2.5 mm). The joint strength of 114 MPa was obtained at 2.0 mm SOD for 30 kJ of energy and 460 m/sec of impact velocity. Microstructural analysis confirms the formation of wavy and micro-porous interfaces. A severe plastic deformation causes the localized melting of the interface, leading to intermetallic phase formation. A high hardness of ~ 520HV_0.5 was observed at the interface as compared to base metals. A leak-proof test using the hydraulic pressure technique shows no leakage at 100 kg/cm² pressure.</p></div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 5","pages":"901 - 917"},"PeriodicalIF":1.9,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Experimental System to Evaluate Dynamic Double-Direct Slip Process of Stressed Fault","authors":"Y. Xu,&nbsp;P. Dong,&nbsp;C. Wang,&nbsp;Y. Zhou,&nbsp;W. Yao,&nbsp;K. Xia","doi":"10.1007/s40799-025-00792-7","DOIUrl":"10.1007/s40799-025-00792-7","url":null,"abstract":"<div><p>Earthquake is one of the most devastating natural hazards, causing severe consequences worldwide. The direct shear tests provided practical approaches to reveal the shear instability and failure of faults. The undesired friction between the normal loading platen and the specimen edge in the direct shear testing system has a nonnegligible influence on accurately observing the shear rupture process and the slip mechanism of faults or rock discontinuities. Consequently, the instability and failure process of geomaterial discontinuities has been widely evaluated using the double-direct shear tests under static loading. Meanwhile, the dynamic shear rupture and slip process on the fault under in-situ stresses is crucially responsible for investigating the rupture speeds, rupture propagation, and rupture mechanism of the discontinuities. However, the existing double-direct shear methodology and system are not valid for conducting dynamic double-direct shear experiments under high loading rate conditions. Thus, to evaluate the dynamic slip process of discontinuities, a novel dynamic double-direct shear experimental methodology was proposed in this study. The Hopkinson bar is used to exert dynamic shear force on the discontinuities, and the biaxial static loading system is designed to apply normal stress on the discontinuities. The 2D displacement field of the double-fault structure under dynamic loading conditions is quantified to reveal the dynamic slip process of faults. The results indicate that both the dynamic loading rate and the normal stress have considerable effects on the peak shear stress of faults. The displacement of the upper discontinuity is almost identical to that of the bottom discontinuity during the dynamic shear process, demonstrating that this testing system can observe the dynamic shear rupture without the undesired friction. The slip displacements of these two discontinuities are rate-dependent, and the normal stresses effect on the displacement field of these two faults is revealed. Therefore, the proposed dynamic double-direct shear experimental methodology can quantitatively observe the dynamic shear and slip process of faults. This system can be extended to investigate other dynamic responses of faults under complex stress states.</p></div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 5","pages":"887 - 899"},"PeriodicalIF":1.9,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of Kerf and Groove Widths in CO2 Laser Cutting Process of PMMA Using Experimental and Machine Learning Methods","authors":"K. Aydın,&nbsp;L. Uğur","doi":"10.1007/s40799-025-00786-5","DOIUrl":"10.1007/s40799-025-00786-5","url":null,"abstract":"<div><p>Laser cutting has become a widely used technology in industrial production due to its high precision, fast processing capacity and widespread use in cutting many materials. Laser cutting of polymer materials is a widely preferred processing method. Polymer materials, especially thermoplastics and thermosets, have a wide range of applications and are used in various industries such as construction, automotive, packaging, medicine and electronics. Laser cutting of these materials has many advantages over other conventional cutting methods, as it cuts without contact and provides high precision and control. However, some difficulties are encountered during laser cutting. These difficulties include heat affected zone formation, kerf width at the cutting edge and surface roughness. Therefore, it is important to understand the effect of laser cutting on polymer materials and optimize the cutting parameters to improve the cutting quality. In this study, a comprehensive investigation was conducted to evaluate the effect of different laser cutting parameters (Focal plane, Cutting speed, Laser power) on the cutting quality of polymer materials. 27 different experimental trials were conducted with various combinations and the data obtained were analyzed using machine learning techniques such as artificial neural network (ANN) and adaptive neuro fuzzy inference system (ANFIS). The results of this study provide an important contribution towards determining the optimal cutting parameters for laser cutting of polymer materials and improving the cutting quality.</p></div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 5","pages":"873 - 886"},"PeriodicalIF":1.9,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Cover: An Experiment for the Validation of Force Reconstruction Techniques on Flexible Structures","authors":"","doi":"10.1007/s40799-025-00789-2","DOIUrl":"10.1007/s40799-025-00789-2","url":null,"abstract":"","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 2","pages":"187 - 187"},"PeriodicalIF":1.5,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}