TY - GEN
T1 - Non-destructive detection of crack in HDPE plate by nanometric change in surface profile
AU - Tada, Naoya
AU - Matsukawa, Yoshitaka
AU - Uchida, Makoto
PY - 2013/12/1
Y1 - 2013/12/1
N2 - When a mechanical load is given to a cracked material, an undulation appears in surface profile around the crack. The undulation is caused by stress-strain concentration at the crack tip and its release near the crack center. If the load is very small and within the elastic deformation range, the material recovers the original shape after unloading and no damage remains. Therefore, this surface undulation by a small mechanical load can be used for detection of crack on the material surface. In this study, non-destructive crack detection method by nanometric change in surface profile is proposed, and the experiment and related finite element analyses were carried out for notched high-density polyethylene (HDPE) plates. Nonuniform height change by a small mechanical load around the notch on the surface of HDPE plate was measured by a laser scanning microscope. The height change distribution agreed with the analytical result.
AB - When a mechanical load is given to a cracked material, an undulation appears in surface profile around the crack. The undulation is caused by stress-strain concentration at the crack tip and its release near the crack center. If the load is very small and within the elastic deformation range, the material recovers the original shape after unloading and no damage remains. Therefore, this surface undulation by a small mechanical load can be used for detection of crack on the material surface. In this study, non-destructive crack detection method by nanometric change in surface profile is proposed, and the experiment and related finite element analyses were carried out for notched high-density polyethylene (HDPE) plates. Nonuniform height change by a small mechanical load around the notch on the surface of HDPE plate was measured by a laser scanning microscope. The height change distribution agreed with the analytical result.
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U2 - 10.1115/PVP2013-97732
DO - 10.1115/PVP2013-97732
M3 - Conference contribution
AN - SCOPUS:84894660855
SN - 9780791855690
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
BT - ASME 2013 Pressure Vessels and Piping Conference, PVP 2013
T2 - ASME 2013 Pressure Vessels and Piping Conference, PVP 2013
Y2 - 14 July 2013 through 18 July 2013
ER -