Abstract
The Mode I critical stress intensity factor (KIc ) obtained by single-edge-notched bending (SENB) tests of medium-density fi berboard (MDF) was experimentally analyzed. In the SENB test, the critical load for crack propagation (Pc ) was determined from the relationship between load/loading-line displacement and load/crack opening displacement (COD). A double cantilever beam (DCB) test was also conducted and the results were compared with those of SENB tests. The value of Mode I critical stress intensity factor was obtained by introducing an additional crack length, when the crack length ranged from 0.5 to 0.7 times the depth of the specimen. This range coincided well with that used to derive the appropriate KIc value in the single-edge-notched tension (SENT) test, which was conducted using the specimens with a similar confi guration cut from the MDF panel used in this study.
Highlights
Ic (SENB), single-edge-notched tension (SENT), compact tension (CT), and double cantilever beam (DCB) tests, the diagrams of which are shown in Figures 1(a)(d), respectively, are most frequently performed because the crack propagation under the opening mode can be induced by these tests
We found that the KIc value of medium-density fiberboard (MDF) can be effectively measured when considering the additional crack length ahead of the crack tip and restricting the range of initial crack length with respect to the specimen geometry
We examined the K value of MDF Ic by the single-edge-notched bending (SENB) test using two types of specimens with different dimensions
Summary
Ic (SENB), single-edge-notched tension (SENT), compact tension (CT), and double cantilever beam (DCB) tests, the diagrams of which are shown in Figures 1(a)(d), respectively, are most frequently performed because the crack propagation under the opening mode can be induced by these tests. The KIc value of medium-density fiberboard (MDF) was examined by SENT and CT tests (Yoshihara, 2010b; Yoshihara and Usuki, 2011). In these tests, we found that the KIc value of MDF can be effectively measured when considering the additional crack length ahead of the crack tip and restricting the range of initial crack length with respect to the specimen geometry.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
