Compliance and KI calibration of double cantilever beam (DCB) specimens

✍ Scribed by R.M. Bonesteel; D.E. Piper; A.T. Davinroy

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 313 KB
• Volume: 10
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(78)90022-x

✦ Synopsis

Ahstraet-Stress intensity coefficients KrBH"*/Pa were derived from experimental compliances for DCB specimens using the Irwin-Kies method. Specimens containing either machined slits or cracks were employed in this study. The stress intensity coefficients were determined for plane strain states of stress and compared to the analyses of Gross and Srawley and Rip& Mostovoy and Patrick. The K, calibration for specimens containing machined slits was found to be in excellent agreement with the earlier analyses over the range of a/H values examined. Specimens with cracks also exhibited a Kr calibration in very good agreement with those mentioned above, provided one uses the actual crack-front length E, rather than specimen width B in calculating the stress intensity coefficients.