Original ResearchPublished 24 September 2026Mechanical, morphological and micromechanical characterization of multiscale walnut shell powder, E-glass fibre and graphene reinforced epoxy hybrid compositesTushar T. Hawal · Vinayak R. Malik · Shailesh Shirguppikar · Rohit MagdumFrontiers in Materialsdoi 10.3389/fmats.2026.1957904