文献类型：期刊文献

英文题名：Characterization of 3D printed bolts based on digital image correlation and infrared thermography

作者：Feng, Xiaowei[1];Xue, Fei[2]

机构：[1]China Univ Min & Technol, Sch Mines, State Key Lab Coal Resources & Safe Min, Xuzhou 221116, Jiangsu, Peoples R China;[2]Shaoxing Univ, Coll Civil Engn, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Zhejiang, Peoples R China

年份：2020

卷号：191

外文期刊名：MATERIALS & DESIGN

收录：SCI-EXPANDED(收录号：WOS:000536937200057)、、EI(收录号：20201308336433)、Scopus(收录号：2-s2.0-85082002825)、WOS

基金：The authorswould like to acknowledge the financial support for this study provided the National Natural Science Foundation of China (51804296), the China Postdoctoral Science Foundation (2019T120480, 2019M661989), and the Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (ZJRMG-2019-03). Two anonymous reviewers provided many valuable comments on thismanuscript, which were thoughtful and insightful; it would have been impossible for the study to have been improved without those comments.

语种：英文

外文关键词：3D printing; Bolt; Tensile test; Infrared thermography; Digital image correlation; Mechanical properties

外文摘要：This study selects 3D printing to innovate traditional research approaches regarding bolting. Three bolts composed of different manufacturing materials-aluminum alloy (AL), die steel (DS) and stainless steel (SS)-are successfully 3D printed, and the desired geometric profile is achieved with high precision. Prior to printing, the digital file of the prototype (PT) bolt is obtained by a 3D laser scanning system. Afterwards, mechanical tensile tests, infrared thermography (IRT) tests and digital image correlation (DIC) tests are carried out. The mechanical testing results indicate that the peak strength of the DS bolt is approximately twice that of the PT bolt. The IRT results show that the maximum temperature on the surface of all bolts except the AL bolt increases as the load increases, and the minimum temperature on the bolt surface is barely impacted by loading. DIC indicates a feasible relationship between the load and strain for the PT bolt, AL bolt and DS bolt. Overall, the AL bolt is not suitable for replicating the PT bolt, whereas the DS bolt and SS bolt are suitable choices. The conclusions established in this study provide new measures for future research regarding laboratory bolting tests and even engineering bolting trials. (C) 2020 The Authors. Published by Elsevier Ltd.