Failure analysis of brass bolt from mausoleum
- 137 Downloads
Brass is usually considered to be a good candidate material for use in a nonaggressive corrosion environment. Brass 260 was used in a rural environment (at a mausoleum) as fixturing hardware that holds etched marble slabs that cover the interment region. After 12 years of service, the bolts began breaking, and the marble slabs crashed to the ground. Failure analysis investigation showed that “seasonal cracking” occurred due to interaction of the bolt with moisture and fertilizer. The company that designed the mausoleum hardware believed that the bolt manufacturer was at fault. However, the only specification given to the bolt manufacturer indicated alloy and dimensions. The bolts were replaced at considerable cost, proving once again that even a seemingly simple component can prove to be costly if not designed by the proper engineer.
Keywordsbrass corrosion corrosion failure analysis failure analysis residual stress stress-corrosion cracking
Unable to display preview. Download preview PDF.
- 2.G. Pantazopoulos: “A Review of Defects and Failure in Brass Rods and Related Components,” Prac. Fail. Anal., 2003, 3(4), pp. 1–22.Google Scholar
- 3.R.G. Baggerly: “Evaluating the Effects of Overtorque in Bolts,” Prac. Fail. Anal., 2001, 1(1), pp. 41–46.Google Scholar
- 4.T. Rakich: Copper Development Association, private communication, Sep 11, 2003.Google Scholar
- 5.J.M. Popplewell and T.V. Gearing: “Stress Corrosion Resistance of Some Copper Based Alloys in Natural Atmospheres,” Corrosion, 1975, 31(8), pp. 279–86.Google Scholar