• Pooja Singh
• Nuasad Khan
• Megha Singh

Bio-fillers/fibers competes effectively and have increased their demand as compared to synthetic ones due to several advantages like low processing and handling cost, low weight, easily biodegradable, minimum health and environmental hazards, renewable nature etc. However, their poor interfacial adhesion with some matrix material leads to poor/low mechanical properties of the composites. In this study, the mechanical properties of walnut shell particles (WNSP) reinforced polyester composites were studied. The composite specimens were prepared by reinforcing walnut shell powder (having particle size less than 75 microns) in to the polyester matrix. The walnut shell particles of wt. % 0, 10, 20, 30, 40 were taken for the study. The prepared samples were tested for tensile properties, flexural properties, hardness and impact energy. It was found that the tensile and flexural strength of neat polyester specimen is more than all the composite specimens. The tensile strength increases at 20 wt.% and then decreases with increase in WNSP wt.% whereas the flexural strength greatly fluctuates up to 40 wt.%. The tensile and flexural modulus increases with increase in WNSP content except 30 wt.%. The hardness and the impact energy were found maximum at 40 and 20 wt. % respectively. It has been also observed that the increase in void content percentage decreases and fluctuates most of the mechanical properties. Based on the findings of this work, WNSP works as a great source of natural reinforced composite having large numbers of applications in various industries ranging from defense, space, automotive, sea transport industry and sport materials.

WNSP Reinforced Polyester Composites, tensile strength, flexural modulus, hardness, impact factor.

"Experimental Investigation of Mechanical Properties of Walnut Shell Particles (WNSP) Reinforced Polyester Composites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.140-149, June-2018, Available :http://www.jetir.org/papers/JETIRC006026.pdf

"Experimental Investigation of Mechanical Properties of Walnut Shell Particles (WNSP) Reinforced Polyester Composites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp140-149, June-2018, Available at : http://www.jetir.org/papers/JETIRC006026.pdf