Determination of quasi-static compressive failure characteristics of pili nut (Canarium ovatum Engl.) shell

Date

4-2012

Degree

Bachelor of Science in Agricultural Engineering

Major Course

Major in Agricultural Power and Machinery Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Ralph Kristoffer B. Gallegos

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

The effects of moisture content and loading orientation on the quasi-static compressive failure characteristics of pili nut (Caranium ovatum Engl.) shell were investigated Nuts of F-18("Katutubo") pili variety conditiuoned at shell moisture levels of 19.49±0.60 % MCwb and 9.51±0.09 % MCwb were compressed laterally and longitudinally to rupture using a universal testing machine. Results showed that longitudinal compression required higher force and deformation to rupture compared with lateral compression. The rupture force requirement of moist (19.49±0.60 % MCwb) and dried (9.51±0.09 %MCwb) pili nuts is not significantly different (p<0.05) at lateral compression. At longitudinal compression, the rupture force significantly increased at decreasing moisture content. The deformation for rupture of longitudinally compressed nuts was not significantly affected by moisture content. At lateral compression, the decrease in moisture content was coupled with a significant decrease in deformation for rupture. Visual inspection revealed that longitudinally compressed nuts at 9.51±0.09 % MCwb showed the most acceptable kernel quality after compression.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2012 A2 /P56

Document Type

Thesis

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