B. Song, T. Martinez, A. Y. Ku, J. Deitz, P. Noell
{"title":"Development of Kolsky Tension Bar Based Dynamic Incremental Strain and Singular Strain Loading Capability","authors":"B. Song, T. Martinez, A. Y. Ku, J. Deitz, P. Noell","doi":"10.1007/s11340-025-01159-0","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>The multiple loadings in a conventional Kolsky bar test prevent an in-depth understanding of the relationship between microstructure change and load history under dynamic loading.</p><h3>Objective</h3><p>In order to correlate the microstructural changes to the dynamic load history, it is necessary to develop a new dynamic test capability that allows the specimen be incrementally deformed with a singular loading for each strain increment.</p><h3>Methods</h3><p>A dynamic incremental strain and singular strain loading (DI <span>\\(\\epsilon\\)</span> S<i>ϵ</i>L) capability based on Kolsky tension bar technique was developed. Different design options and considerations are presented to facilitate the DI <span>\\(\\epsilon\\)</span> S<i>ϵ</i>L capability such that the user can choose the combination that best meets their test requirements.</p><h3>Results</h3><p>To demonstrate the new capability, a dog-bone shaped 316L stainless steel was subjected to a series of dynamic tensile loadings with an incremental strain of ~ 11% for each singular loading test. The 316L stainless steel specimens were subjected to a singular loading but different strains under adiabatic condition. At the same dynamic strain rate, the 316L stainless steel became softer and less ductile under adiabatic condition due to adiabatic heating.</p><h3>Conclusions</h3><p>With this new capability, one could decouple the thermosoftening from a conventional dynamic tension test for predictive rate-dependent material model development. The information obtained from this capability may also be used to determine microstructural change and/or damage evolution during dynamic tension testing.</p></div>","PeriodicalId":552,"journal":{"name":"Experimental Mechanics","volume":"65 5","pages":"667 - 681"},"PeriodicalIF":2.0000,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Experimental Mechanics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11340-025-01159-0","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
引用次数: 0
Abstract
Background
The multiple loadings in a conventional Kolsky bar test prevent an in-depth understanding of the relationship between microstructure change and load history under dynamic loading.
Objective
In order to correlate the microstructural changes to the dynamic load history, it is necessary to develop a new dynamic test capability that allows the specimen be incrementally deformed with a singular loading for each strain increment.
Methods
A dynamic incremental strain and singular strain loading (DI \(\epsilon\) SϵL) capability based on Kolsky tension bar technique was developed. Different design options and considerations are presented to facilitate the DI \(\epsilon\) SϵL capability such that the user can choose the combination that best meets their test requirements.
Results
To demonstrate the new capability, a dog-bone shaped 316L stainless steel was subjected to a series of dynamic tensile loadings with an incremental strain of ~ 11% for each singular loading test. The 316L stainless steel specimens were subjected to a singular loading but different strains under adiabatic condition. At the same dynamic strain rate, the 316L stainless steel became softer and less ductile under adiabatic condition due to adiabatic heating.
Conclusions
With this new capability, one could decouple the thermosoftening from a conventional dynamic tension test for predictive rate-dependent material model development. The information obtained from this capability may also be used to determine microstructural change and/or damage evolution during dynamic tension testing.
传统的科尔斯基杆试验中的多次加载阻碍了对动态加载下微观结构变化与加载历史之间关系的深入理解。目的为了将微观结构变化与动载荷历史联系起来，有必要开发一种新的动态试验能力，允许试样在每次应变增量的单一载荷下进行增量变形。方法开发基于Kolsky张力杆技术的动态增量应变和奇异应变加载（DI \(\epsilon\) SϵL）能力。提出了不同的设计选项和考虑因素，以促进DI \(\epsilon\) SϵL功能，以便用户可以选择最能满足其测试要求的组合。结果为了证明这种新能力，狗骨型316L不锈钢承受了一系列增量应变为11的动态拉伸载荷% for each singular loading test. The 316L stainless steel specimens were subjected to a singular loading but different strains under adiabatic condition. At the same dynamic strain rate, the 316L stainless steel became softer and less ductile under adiabatic condition due to adiabatic heating.ConclusionsWith this new capability, one could decouple the thermosoftening from a conventional dynamic tension test for predictive rate-dependent material model development. The information obtained from this capability may also be used to determine microstructural change and/or damage evolution during dynamic tension testing.
期刊介绍：
Experimental Mechanics is the official journal of the Society for Experimental Mechanics that publishes papers in all areas of experimentation including its theoretical and computational analysis. The journal covers research in design and implementation of novel or improved experiments to characterize materials, structures and systems. Articles extending the frontiers of experimental mechanics at large and small scales are particularly welcome.
Coverage extends from research in solid and fluids mechanics to fields at the intersection of disciplines including physics, chemistry and biology. Development of new devices and technologies for metrology applications in a wide range of industrial sectors (e.g., manufacturing, high-performance materials, aerospace, information technology, medicine, energy and environmental technologies) is also covered.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
