Protocols for studying the time-dependent mechanical response of viscoelastic materials using spherical indentation stress-strain curves
Protocols for studying the time-dependent mechanical response of viscoelastic materials using spherical indentation stress-strain curves
复制标题
使用球形压痕应力-应变曲线研究粘弹性材料随时间变化的机械响应的协议
DOI：
10.1007/s11043-020-09472-y
复制
发表时间：
2020
影响因子：
2.5
通讯作者：
Kalidindi, S. R.
中科院分区：
文献类型：
--
作者：
Abba, M. T.;Kalidindi, S. R.
球形纳米压痕已成功地用于提取有意义的压痕应力-应变曲线在硬质材料，如金属和陶瓷。这些方法尚未应用于粘弹-粘塑性聚合物样品。本研究探讨了目前的球形纳米压痕分析协议在提取压痕应力-应变曲线和粘弹性在室温下表现出随时间变化的材料响应的样品的潜力。这些新的协议进行了测试，聚甲基丙烯酸甲酯，聚碳酸酯和低密度聚乙烯。在不同加载速率和压头尖端尺寸条件下提取的属性被观察到是一致的。它进一步表明，它是可能的恢复的压缩应力-应变曲线的聚甲基丙烯酸甲酯和低密度聚乙烯从所测量的压痕应力-应变曲线。这项研究建立了一些基础，需要可靠地调查当地的时间依赖性的机械响应的材料使用球形纳米压痕的协议的发展。
Spherical nanoindentation has been used successfully to extract meaningful indentation stress-strain curves in hard materials such as metals and ceramics. These methods have not yet been applied on viscoelastic-viscoplastic polymer samples. This study explores the potential of the current spherical nanoindentation analysis protocols in extracting indentation stress-strain curves and viscoelastic properties on samples exhibiting time-dependent material response at room temperature. These new protocols were tested on polymethyl methacrylate, polycarbonate, and low-density polyethylene. The properties extracted under different loading rates and indenter tip sizes conditions were observed to be consistent. It is further demonstrated that it is possible to recover the compression stress-strain curves for polymethyl methacrylate and low-density polyethylene from the measured indentation stress-strain curves. This study establishes some of the foundations needed for the development of protocols needed to reliably investigate the local time-dependent mechanical response of materials using spherical nanoindentation.
登录
查看更多内容
压痕过程中的屈服点现象
DOI：
10.1557/proc-522-83
发表时间：
1998
期刊：
MRS Proceedings
影响因子：
--
作者：
D. Bahr;C. Watkins;D. Kramer;W. Gerberich
通讯作者：
W. Gerberich
实际压头尖端几何形状、材料弹塑性变形定律和通用硬度
影响因子：
2.7
作者：
K. Bouzakis;N. Michailidis;S. Hadjiyiannis;G. Skordaris;G. Erkens
通讯作者：
G. Erkens
影响因子：
2.9
作者：
A. Khosravani;C. Caliendo;S. Kalidindi
通讯作者：
A. Khosravani;C. Caliendo;S. Kalidindi
影响因子：
9.4
作者：
Pathak, Siddhartha;Stojakovic, Dejan;Kalidindi, Surya R.
通讯作者：
Kalidindi, Surya R.
通过循环纳米压痕测试识别粘弹性模型参数
影响因子：
0.8
作者：
A. Jäger;R. Lackner
通讯作者：
R. Lackner