Comparison of Tangent Curve Method and Reciprocal Slope Transformation Method for Describing Mechanical Behaviour of Jatropha Curcas L. Bulk Seeds Under Compression Loading

Authors : David HERAK, Abraham KABUTEY, Petr HRABE

Pages : 83-86

View : 14 | Download : 10

Publication Date : 2014-04-01

Article Type : Research Paper

Abstract :The study investigates the use of two different methods for the description of deformation characteristics of Jatropha curcas L. bulk seed in linear compression. These methods include the tangent curve and reciprocal slope transformation. The merits and limitations of both methods were also compared. The different methods were used for development of mathematical equations for fitting experimental data describing the mechanical behaviour of Jatropha bulk seed. Pressing vessel diameter 60 mm was used to compress the bulk Jatropha seed which was measured at pressing height 80 mm. For tangent curve method, the experimental data was fitted by using the Marquardt Levenberg process whiles the Least Square Method insert ignore into journalissuearticles values(LSM); satisfies the reciprocal slope transformation method. Statistical analysis of both experimental and fitted data coefficients of reciprocal slope transformation and tangent curve methods indicated significant results with high coefficient of determination which suggests the suitability of both methods for the description of deformation characteristic of Jatropha curcas L. bulk seed in linear compression.
Keywords : Oil bearing bulk seed, mathematical model, force deformation curve, Marquardt Levenberg Process