APPLICATION OF AUTHORSHIP IDENTIFICATION OF VARNISH MATERIAL EVIDENCE BY SEM

The varnish materials,between the spot of transportation casualty and suspected vehicle,is comparatively determined by SEM and EDX. According to the computing specific value of the weight percent between the number i element and the main chemical element in the same pattern,the fold line figure of examination result of the varnish materials is drawn by excel spreadsheet procedure. Base on match circumstance of the both fold line,the authorship identification method of varnish material evidence by SEM and EDX was put forward. The method resolves the problem that authorship identification method only by element characteristic intensity in the past,which is inconvenient to operate during the law court identified fulfillment.