Document Detail

Investigation of composite materials using SLM-based phase retrieval.
MedLine Citation:
PMID:  23811877     Owner:  NLM     Status:  In-Data-Review    
We present a robust method to inspect a typical composite material constructed of carbon fiber reinforced plastic (CFRP). It is based on optical surface contouring using the spatial light modulator (SLM)-based phase retrieval technique. The method utilizes multiple intensity observations of the wave field, diffracted by the investigated object, captured at different planes along the optical axis to recover the phase information across the object plane. The SLM-based system allows for the recording of the required consecutive intensity measurements in various propagation states across a common recording plane. This overcomes the mechanical shifting of a camera sensor required within the capturing process. In contrast to existing phase retrieval approaches, the measuring time is considerably reduced, since the switching time of the SLM is less than 50 ms. This enables nondestructive testing under thermal load. Experimental results are presented that demonstrate the approach can be used to assess structural properties of technical components made from CFRP.
Mostafa Agour; Claas Falldorf; Ralf B Bergmann
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics letters     Volume:  38     ISSN:  1539-4794     ISO Abbreviation:  Opt Lett     Publication Date:  2013 Jul 
Date Detail:
Created Date:  2013-07-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708433     Medline TA:  Opt Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2203-5     Citation Subset:  IM    
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