Effect of Sliding Speed, Abrasion Surface and Normal Load on Coefficient of Friction of Grapefruit (Citrus paradisi)

Issue Date

9-2008

Abstract

Star Ruby grapefruits were tested using a linear sliding friction test device connected to a Lloyd material testing machine, a data acquisition system and a personal computer. The tests were carried out with four replications per treatment combination under controlled variable parameters. Controlled variable parameters were sliding speed, abrasion surface and normal load. The peak static and average dynamic coefficients of friction against four abrasion surfaces (aluminum, plastic, corrugated cardboard and galvanized sheet) were measured at four sliding speeds (50, 100, 250 and 500 mm min-1) and three normal loads (20, 30 and 40 N). Analysis of variance (ANOVA) results showed that abrasion surface for both peak static and average dynamic, and normal load for only average dynamic coefficient of friction significantly affected the coefficient of friction, respectively. The effect of sliding speed on both coefficients of friction was not statistically significant. The coefficient of friction tended to increase or decrease depending on abrasion surface and normal load. The highest peak static and average dynamic coefficient of friction were found in the case of galvanized sheet by 500 mm min-1 and galvanized sheet by 50 mm min-1 combinations, respectively. The results of this study could be used for protecting products against abrasion damage.

Source or Periodical Title

Philippine Agricultural Scientist, The (Formerly: The Philippine Agriculturist)

ISSN

0031-7454

Volume

91

Issue

3

Page

308-314

Document Type

Article

Frequency

quarterly

Physical Description

illustrations; graphs; tables; references

Language

English

Subject

abrasion surface, coefficient of friction, grapefruit, sliding speed

En – AGROVOC descriptors

CITRUS PARADISI; GRAPEFRUITS; ABRASION; FRICTION COEFFICIENT; POSTHARVEST CONTROL

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