About: http://webisa.webdatacommons.org/447963425

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	One technique is a liquid penetrant test where the coating is removed and the structure is covered with a liquid penetrant dye to see what cracks have developed.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es