Digital Shearography for NDT: Phase Measurement Technique and Recent Developments
| Autor: | Xizuo Dan, Sijin Wu, Qihan Zhao, Yonghong Wang, Fangyuan Sun, Lianxiang Yang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
spatial phase-shift technology
Computer science temporal phase-shift technology Automotive industry Phase (waves) 02 engineering and technology 01 natural sciences lcsh:Technology 010309 optics lcsh:Chemistry nondestructive testing of composite materials Nondestructive testing 0103 physical sciences Metallic materials Electronic engineering General Materials Science Sensitivity (control systems) digital shearography Aerospace Instrumentation lcsh:QH301-705.5 Fluid Flow and Transfer Processes business.industry lcsh:T Process Chemistry and Technology General Engineering Specular surface 021001 nanoscience & nanotechnology lcsh:QC1-999 Computer Science Applications Shearography lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 0210 nano-technology business lcsh:Engineering (General). Civil engineering (General) lcsh:Physics |
| Zdroj: | Applied Sciences, Vol 8, Iss 12, p 2662 (2018) |
| ISSN: | 2076-3417 |
| Popis: | Composite materials have seen widespread use in the aerospace industry and are becoming increasingly popular in the automotive industry due to their high strength and low weight characteristics. The increasing usage of composite materials has resulted in the need for more effective techniques for nondestructive testing (NDT) of composite structures. Of these techniques, digital shearography is one the most sensitive and accurate methods for NDT. Digital shearography can directly measure strain with high sensitivity when combined with different optical setups, phase-shift techniques, and algorithms. Its simple setup and less sensitivity to environmental disturbances make it particularly well suited for practical NDT applications. This paper provides a review of the phase measurement technique and recent developments in digital shearographic NDT. The introduction of new techniques has expanded the range of digital shearography applications and made it possible to measure larger fields and detect more directional or deeper defects. At the same time, shearography for different materials is also under research, including specular surface materials, metallic materials, etc. Through the discussion of recent developments, the future development trend of digital shearography is analyzed, and the potentials and limitations are demonstrated. |
| Databáze: | OpenAIRE |
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