PENETRATION AND STRESS-STRAIN BEHAVIOR OF POTATO TUBERS DURING STORAGE
Soliman, S., El-Sayed, A. (2017). PENETRATION AND STRESS-STRAIN BEHAVIOR OF POTATO TUBERS DURING STORAGE. EKB Journal Management System, 34(4), 2291-2310. doi: 10.21608/mjae.2017.97514
Soliman N. Soliman; Azhar E. El-Sayed. "PENETRATION AND STRESS-STRAIN BEHAVIOR OF POTATO TUBERS DURING STORAGE". EKB Journal Management System, 34, 4, 2017, 2291-2310. doi: 10.21608/mjae.2017.97514
Soliman, S., El-Sayed, A. (2017). 'PENETRATION AND STRESS-STRAIN BEHAVIOR OF POTATO TUBERS DURING STORAGE', EKB Journal Management System, 34(4), pp. 2291-2310. doi: 10.21608/mjae.2017.97514
Soliman, S., El-Sayed, A. PENETRATION AND STRESS-STRAIN BEHAVIOR OF POTATO TUBERS DURING STORAGE. EKB Journal Management System, 2017; 34(4): 2291-2310. doi: 10.21608/mjae.2017.97514

PENETRATION AND STRESS-STRAIN BEHAVIOR OF POTATO TUBERS DURING STORAGE

Misr Journal of Agricultural Engineering
Article 43, Volume 34, Issue 4, October 2017, Page 2291-2310  XML PDF (1.1 MB)
Document Type: Original Article
DOI: 10.21608/mjae.2017.97514
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Authors
Soliman N. Soliman1; Azhar E. El-Sayed2
1Prof. of Food Eng., Fac. of Ag., Alexandria Univ. Egypt.
2Researcher., Ag. Eng. Res. Inst., Ag. Res. Center, Ministry of Ag., Egypt.
Abstract
The aim of this investigation is to study the Penetration and stress-strain behavior of Lady Rosetta potato tubers variety as destructive tests under different storage conditions. An Instron machine was used for stress-strain tests. Force deformation tests of fresh potato tuber show that the small tubers have a more strength than that for big tubers for each soil cultivars. The fresh harvested tubers tend to be very brittle. Because of their brittleness, potato tubers tissues were cracked under compression test. The result appears that yield strain, increases gradually with increasing storage time. Rupture force, rupture strain, rupture stress, and toughness decreases gradually with increasing storage time. Yield force, yield stress, resilience, initial modulus of elasticity and secant modulus of elasticity decreases gradually with increasing storage time. Penetration forces (N) of fresh tubers were measured. The penetration force was ranged from 19.080 to 26.389 within average of 22.306 for sand soil cultivars, while ranged from 18.246 to 32.785 with an average of 24.413 for black soil cultivars, using probe of 3.8 mm diameter.
References
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