Failure analysis of an abrasive cut-off wheel

The relationship between composition, structure, properties and performance is central to the design, use and failure analysis of engineering componen ts. Thermogravimetric analysis (TCA) and wavelength X-ray fluorescence (WRX F) were applied in evaluating the elemental composition and thermal propert ies, respectively, of a failed abrasive cut-off wheel. The cutting tool, co nsisting of a bonded abrasive disc, failed prematurely during the routine s ectioning of a steel member. The operator was injured as a result. Analysis indicated an improper mixture of the organic constituents comprising the w heel bonding material. Instead of the uniform wear anticipated under normal cutting conditions, the improper mixture resulted in a degradation of the wheel's mechanical properties, and catastrophic brittle fracture. (C) 2001 Elsevier Science Ltd. All rights reserved.