TY - JOUR A1 - Bruno, Giovanni A1 - Onel, Yener A1 - Cooper, R. C. A1 - Lange, A. A1 - Watkins, T. R. A1 - Shyam, A. T1 - Young's modulus and Poisson's ratio changes due to machining in porous microcracked cordierite N2 - Microstructural changes in porous cordierite caused by machining were characterized using microtensile testing, X-ray computed tomography, and scanning electron microscopy. Young's moduli and Poisson's ratios were determined on similar to 215- to 380-mu m-thick machined samples by combining digital image correlation and microtensile loading. The results provide evidence for an increase in microcrack density and decrease of Young's modulus due to machining of the thin samples extracted from diesel particulate filter honeycombs. This result is in contrast to the known effect of machining on the strength distribution of bulk, monolithic ceramics. KW - Stress KW - Beta-Eucryptite KW - Brittle materials KW - Ceramic materials KW - Thermal-Expansion KW - Fracture-Toughness KW - Composite materials KW - Differential scheme KW - Elastic-moduli KW - Representative volume element PY - 2016 U6 - https://doi.org/10.1007/s10853-016-0209-9 SN - 0022-2461 VL - 51 IS - 21 SP - 9749 EP - 9760 PB - Springer, NY, USA AN - OPUS4-37867 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -