Characterization of Tensile and Compressive Behavior of Microscale Sheet Metals Using a Transparent Microwedge Device

Abstract

Ihe cyclic and compressive mechanical behavior of ultra¡hin sheet me¡als was experimemally investigated. A novel transparent wedge device was designed and fabricaied ¡o preven¡ ¡he buckling of ¡hin sheets under compressive loads, while also allowing fuil field strain measuremenis of ¡he .specimen using digi¡al imaging me¡hods. Thin brass and s¡ain¡ess steel .sheet metal specimens wi¡h ¡hicknesses on ¡he order of 10-100 ßtn were tested using ¡he microwedge device. E.xperimemal resuhs show that ¡he device can be used ¡o delay ¡he onset of early buckling modes of a ¡hin shee¡ under compression, which is critical in examining ¡he compressive and cyclic mechanical behavior ofshee¡ me¡als.

Comparison of the hardening behaviour of different steel families: From mild and stainless steel to advanced high strength steels

“…Bae and Hug [33] used a spring-loaded clamping device in various strain rates. More recently, a transparent wedge device was designed to prevent the buckling of thin sheets, allowing full field strain measurements of the specimen using digital imaging methods [40]. In the present study, a special tool to avoid buckling was also developed and its description is presented below.…”