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A study of formability of palm leaf materials using Limiting Dome Height testing


Deformation response of Areca catechu palm leaf-sheath under biaxial stretching is evaluated using Limiting Dome Height (LDH) testing. It is shown that the leaf material has high formability, with biaxial limit strains ~ 0.4, comparable to that of ductile sheet metals. Hydration of the leaf-sheath prior to the forming increases the limit strains by approximately 500% and lowers deformation forces by up to 85%. The potential of the LDH test for characterizing the stretch-forming response of plant materials is also demonstrated. Implications for single-step forming of plant leaf materials into products and manufacturing of eco-friendly foodware are discussed.

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Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.


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The authors would like to acknowledge B.V. Prashanth Kumar for arranging an industrial visit to Omkara Ventures, Tumkur, India and for showing us the commercial areca-leaf forming process. The work was supported in part by NSF CMMI Award 2100568.

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Correspondence to Debapriya Pinaki Mohanty.

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Mohanty, D.P., Udupa, A., Anilchandra, A.R. et al. A study of formability of palm leaf materials using Limiting Dome Height testing. MRS Communications 11, 662–668 (2021).

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  • Biomaterial
  • Microstructure
  • Ductility
  • Sustainability