<![CDATA[This study was aimed to analyze mechanical properties of SalakPondoh fruit on maturity periods through non-linear viscoelastics model from Lichtensteiger. Using a pneumatics impactor provided bypiezoelectric force sensor BK 8200 and acceleration sensor BK 4374, the histories of the impact forces and impact acceleration were recorded on microcomputer system. Thirty-three Salak Pondoh fruit with seven maturity levels were evaluated through impact impulse on one side. The deformation velocity and deformation level of Salak Pondoh fruit, due to impact were analyzed and differentiated from impact acceleration data. Using non-linear visco-elastical Lichtensteiger model, the mechanical properties of Salak Pondohfruit were analyzed quantitatively. The result of this study shows impact force, deformation, and deformation velocity histories were able to describefirmness and softness mechanical properties of Salak Pondoh quantitatively.]]>
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