Two-grating interferometer with sinusoidal phase modulation for surface profile measurement

2005 ◽  
Vol 44 (4) ◽  
pp. 043601 ◽  
Author(s):  
Yande Xu
Keyword(s):  
Phase Modulation ◽  
Surface Profile ◽  
Profile Measurement ◽  
Grating Interferometer ◽  
Surface Profile Measurement

Damage Characteristics of Dynamically Induced Incipient Spall in Ultrapure Aluminum

2018 ◽  
Vol 910 ◽  
pp. 130-136
Author(s):  
Hui Peng ◽  
Xiao Yang Pei ◽  
Ji Dong Yu ◽  
Mei Lan Qi ◽  
Jing Song Bai ◽  
...  
Keyword(s):  
Cross Section ◽  
Surface Profile ◽  
Chromatic Aberration ◽  
Profile Measurement ◽  
Plate Impact ◽  
Damage Characteristics ◽  
3D Surface Topography ◽  
Impact Experiments ◽  
Surface Profile Measurement ◽  
Ductile Fracture Process

A series of plate-impact experiments were performed to study the damage characteristics of incipient spall in ultrapure aluminum (99.999%). Surface profile measurement system based on the axial chromatic aberration was used to measure the cross section of “soft-recovered” samples and reconstruct the metallographic and 3D surface topography. Statistical analyses show that the size distribution, coalescence condition and connectivity factor of the voids are regularly affected by loading conditions. Based on this finding, the mechanisms that control the damage properties and evolution process of dynamic fracture are analyzed in detail. The results of this research offer an experimental quantitative microstructure description of the ductile fracture process.

Sign in / Sign up

Export Citation Format

Share Document