利用声发射和数字图像相关法原位观测金属化氮化铝基板的退化

Metallized aluminum nitride produced by active metal brazing (AMB-AlN) substrates is commonly used in power modules for heat dissipation but is susceptible to damage under large temperature variations. While previous studies have used thermal cycling tests ranging from −40 to 250 °C, in situ observations of degradation in AMB-AlN have not been reported. In this work, internal cracking and 3-D defo...