Adhesion measurement of thin films by a modified laser spallation technique: theoretical analysis and experimental investigation |
| |
Authors: | M Zhou YK Zhang L Cai |
| |
Institution: | (1) College of Material Science and Engineering, Jiangsu University of Science and Technology, Dantu Road, Zhenjiang, Jiangsu 212013, P.R. China, CN;(2) College of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212013, P.R. China, CN |
| |
Abstract: | Laser driven shocks can lead to a dynamic failure, called film spallation. Here, we use a modified laser spallation set-up
to measure the dynamic adhesion of thin films and we propose a novel diagnostic technology. Based on correlation theory, new
spallation criteria for characterizing the progressive damage at the interface between the film and the substrate are established,
such as interface delamination, film spallation and film expulsion. With the help of the theory, the degree of damage and
the dimension of damage (i.e. fracture), such as the minimum width of delamination radius, the thickness of the film etc.,
are estimated. Experiments are carried out on epoxy/stainless steel and epoxy/Al, and the experimental results show that their
dynamic bonding strengths are about 25 MPa and 20 MPa, respectively. The detailed results, analyses and discussions are presented
in this paper.
Received: 6 February 2001 / Accepted: 3 December 2001 / Published online: 11 February 2002 |
| |
Keywords: | PACS: 42 62 Cf 81 70 C |
本文献已被 SpringerLink 等数据库收录! |
|