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通过感应加热系统可激活的重新粘结和愈合粘合接头的力学性能

The Mechanical Performance of Re-Bonded and Healed Adhesive Joints Activable through Induction Heating Systems.

作者信息

Ciardiello Raffaele

机构信息

Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy.

Inter-Departmental, Multi-Disciplinary Research Center J-TECH@PoliTO, 10129 Turin, Italy.

出版信息

Materials (Basel). 2021 Oct 24;14(21):6351. doi: 10.3390/ma14216351.

DOI:10.3390/ma14216351
PMID:34771876
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8585462/
Abstract

This work aims to study the healing potential properties of a reversible thermoplastic adhesive. The adhesive is activable by using induction heating systems that can induce thermal heat in the particles throughout the electromagnetic field so they can melt the adhesive for bonding or separation procedures. The healing procedure consists of damaging single lap joint (SLJ) specimens with quasi-static and fatigue tests and then using an inductor to generate an electromagnetic field able to heat the adhesive to its melting point in order to heal the damaged SLJ specimens. SLJ tests were performed on damaged and healed specimens to assess, respectively, the residual mechanical properties of the damaged specimens and the mechanical properties after healing. SLJ tests showed that the healing procedure can completely recover the joint stiffness of the damaged adhesive joints, a huge part of the maximum shear strength and the SLJ absorbed energy. This work shows also the possibility of re-bonding completely failed or separated SLJs by using the same procedure. The mechanical properties of SLJs after healing and re-bonding are compared to the SLJ compared on virgin specimens to assess the recovered mechanical properties.

摘要

这项工作旨在研究一种可逆热塑性粘合剂的愈合潜在特性。该粘合剂可通过感应加热系统激活，该系统能在整个电磁场中使颗粒产生热，从而使粘合剂熔化以进行粘结或分离操作。愈合过程包括通过准静态和疲劳试验对单搭接接头（SLJ）试样进行损伤，然后使用感应器产生一个能将粘合剂加热到熔点的电磁场，以便愈合受损的SLJ试样。对受损和愈合后的试样进行SLJ试验，分别评估受损试样的残余力学性能和愈合后的力学性能。SLJ试验表明，愈合过程能够完全恢复受损粘合剂接头的接头刚度、大部分最大剪切强度以及SLJ吸收能量。这项工作还表明，通过使用相同的程序，可以对完全失效或分离的SLJ进行重新粘结。将愈合和重新粘结后的SLJ的力学性能与原始试样上的SLJ力学性能进行比较，以评估恢复的力学性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/47e53d81a32c/materials-14-06351-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/e20954ac205b/materials-14-06351-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/3b68c96ef365/materials-14-06351-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/9a6ad1d61019/materials-14-06351-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/47e53d81a32c/materials-14-06351-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/e20954ac205b/materials-14-06351-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/3b68c96ef365/materials-14-06351-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/9a6ad1d61019/materials-14-06351-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a31a/8585462/47e53d81a32c/materials-14-06351-g004.jpg

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