MEASUREMENT OF INTERFACE STRENGTH BY LASER-PULSE-INDUCED SPALLATION

被引：103

作者：

GUPTA, V

ARGON, AS

CORNIE, JA

PARKS, DM

机构：

[1] MIT,DEPT MECH ENGN,CAMBRIDGE,MA 02139

[2] MIT,DEPT MAT SCI & ENGN,CAMBRIDGE,MA 02139

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1990年 / 126卷

关键词：

D O I：

10.1016/0921-5093(90)90116-K

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The strength of planar interfaces between a substrate and a thin coating can be measured quite effectively by a laser spallation technique. In this technique a laser pulse of a high enough energy and a pre-determined length is converted into a pressure pulse of a critical amplitude and width that is sent through the substrate toward the free surface with the coating. The reflected tensile wave then pries off the coating. The critical stress amplitude that accomplishes the removal of the coating is determined from a computer simulation of the process. The simulation itself is verified by means of a piezoelectric crystal probe which is capable of mapping out the profile of the stress pulse generated by the laser pulse. In this paper the basic methodology is described and some preliminary results are given of the actual spallation measurements. © 1990.

引用

页码：105 / 117

页数：13

共 11 条

[1] INTRINSIC TOUGHNESS OF INTERFACES BETWEEN SIC COATINGS AND SUBSTRATES OF SI OR C-FIBER [J].