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ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
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ASM International
Volume
1
ISBN electronic:
978-1-62708-214-3
Publication date:
1992
Book Chapter

Failure of a Seat on a School Playground Swing Set

By
D.O. Leeser
D.O. Leeser
Materials Consulting Engineer
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Published:
1992
Page range:
443 - 444

Abstract

The failure during use of a seat on a heavy-duty swing set at an elementary school was investigated. The seat contained a perforated reinforcing sheet metal (galvanized type 430 stainless steel) insert covered by an elastomeric material. Specimens of the reinforcing sheet from the failed seat were examined using SEM fractography, tensile and ductility tests, and spectrographic chemical analysis. The test results showed that the steel used did not meet the manufacturer's specifications for ductility (elongation). In addition, the small-diameter punched holes caused a stress concentration factor that aggravated the brittleness of the steel.

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D.O. Leeser, 1992. "Failure of a Seat on a School Playground Swing Set", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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