Abstract
Work of fracture (WOF) of unidirectionally aligned sisal-glass hybrid laminates, especially glass core — sisal shell (SGS) laminates, have been studied using flat charpy test. Keeping the volume fraction of sisal at about 0.4, the WOF of SGS laminates linearly increased from 80.2 to 228 kJ m−2 by varying the volume fraction of glass at the core (Vg core) from 0 to 0.2. However, further enhancement in WOF has been observed when the glass core is shifted from the midline towards the tensile side of the laminate with respect to impact. The specific work of fracture (165 kJ m−2) of SGS laminate atVg core 0.2 is identical to that of glass-reinforced polyester composites containing 0.6 volume fraction of glass. Addition of glass facings to SGS laminates increased its WOF by 20 to 30 kJ m−2 when the volume fraction of glass in the facings (Vg facings) was about 0.04. The increase in resistance to compressive yielding that occurs by placing glass facings above a critical size (Vg facings ≃ 0.04 in the present case) adversely affected the WOF of SGS hybrid laminates.
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.
