Wen Jin Meng's KTH Solid Mechanics Seminar "Probing mechanical integrity of metals and metal/ceramic interfaces through small-scale mechanical testing"

Wen Jin Meng May 14 2025.pdf (pdf 155 kB)

Abstract. Engineering and manufacturing better structural materials and components demand basic understanding of the mechanical response of metals and metal/ceramic interfaces under various loading conditions. One key part to this understanding is testing. Traditional mechanical testing using macroscale specimens has limitations when it comes to quantifying basic responses related to interfacial integrity, micromanufacturing processes, and fatigue failures. Technological advances in nanoscale machining and nano-/micro-scale actuation enable quantitative mechanical testing to be performed at the micron length scale and in range of frequencies at least one order of magnitude beyond macroscale testing capabilities. In this talk, three examples related to mechanical integrity of metals and metal/ceramic interfaces will be used to illustrate the power of small-scale mechanical testing in combination with multiscale materials characterization and simulation for gaining basic understanding of metal/ceramic interfaces, micron scale plasticity, and fatigue crack growth and initiation