About: http://webisa.webdatacommons.org/408398994

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Such may allow detection of below surface optical characteristics indicative of fatigue, cracks, strain, stress or other deterioration.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca