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Eke, A. B.
Department of Agricultural and Bioresources Engineering, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State, Nigeria
Ehiem, J. C.
Department of Agricultural and Bioresources Engineering, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State, Nigeria
ABSTRACT
Some mechanical properties
(bioyield force, compressive force, rupture force, deformation energy, moduli of elasticity, toughness and resilience,
initial volume and unit volume energy specify the characteristics) of two
species of periwinkle (Tympanotonusfuscatusvarfuscatus (rough shell) and
Tympanotonusfuscatusvar radula (smooth shell)) as affected by variety and
loading orientation were studied under compression loading. Instron Universal
Testing Machine (Testometrc, Lincolin, Business England) was used to carry out
the compression test at a uniform speed of 40 mm/min. Mechanical properties
studied were bioyield force, compressive force, rupture force, deformation
energy, moduli of elasticity, toughness
and resilience, initial volume and unit volume energy. The results obtained
showed that longitudinal loading for Tympanotonusfuscatusvar radula variety
require more cracking force than transverse loading of
Tympanotonusfuscatusvarfuscatus. The Unit volume energy for longitudinal and
transverse loading of Tympanotonusfuscatusvar radula are 228659±76834 J/m3 and
190315±73663.5 J/m3 respectively while Tympanotonusfuscatusvarfuscatus
values are 186105±33762.5 J/m3 and 165358±25214.30 J/m3
respectively. Deformation energy of longitudinal loading of
Tympanotonusfuscatusvar radula and Tympanotonusfuscatusvarfuscatus varieties
were 66.60% and 54.85% respectively higher than the transverse loading. The
difference between longitudinal and transverse loading of deformation energy
for both varieties are highly significant (p2 of average value 0.946, this indicates best fit of relationship
between the parameters studied.
Keywords: Power factor, reactive power, maximum demand, losses, and periwinkle, rupture force, bioyield, compression, deformation.capacitor.
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Published
Monday, June 22, 2015
Issue
Vol. 1 No. 1, June 2015
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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