Skip to main content
padlock icon - secure page this page is secure

Open Access Study on the rule of blister formation and identification technology of multi-cores copper wires in fire

Download Article:
(PDF 16,041.7 kb)
The common presence of the wire blisters in fire indicates that the wire was exposed to fire. Yet current overload happening before fire also causes some wire blisters. Most trace evidences on the wire from fire are required to examine melted blisters marks of the wire. Thus, it is critical to clearly identify and determine the differences between blisters merely exposure to fire and current overload for fire investigators. Two fire scenarios, fire heating and overcurrent, and 2.5 mm2 multi-cores copper wires were selected by this paper to make blisters. Then, the identification technology of blisters was studied. The experimental results suggested that the external appearance and metallographic structure taken on by blisters were not the precise evidences to identify whether blisters are merely exposed to fire or overcurrent. Therefore, the metallographical method of polarized light was used to analyse Cu2O content in blisters. Besides, such content was used to accurately identify two kinds of blisters. The content of Cu2O of the overcurrent blisters was larger than that of the fire heating blisters notably.

12 References.

No Supplementary Data.
No Article Media
No Metrics


Document Type: Research Article

Publication date: July 1, 2020

More about this publication?
  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more