Fracture failure of a shell structure

✍ Scribed by N.S. Xi; C.H. Tao; H. Yan

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 718 KB
• Volume: 4
• Category: Article
• ISSN: 1350-6307
• DOI: 10.1016/s1350-6307(97)00016-2

✦ Synopsis

Several shells were found fractured at the same position after long distance transportation. Chemical composition analysis, metallographic examination, stress calculation and fracture surface observation were performed. Stress calculation and fracture surface analysis results showed that the crack originated at the upper part of the shell structure and propagated to the two sides and lower part of the shell structure. The fracture cause and mode were discussed comprehensively and preventive actions were specified. It was concluded that multiple overload induced the cracking of the shell structure. The poor transportation method and a high stress concentration were responsible for the fracture of the shell structure.