Determination of the some mechanical properties and susceptibility to bruising damage of apples


Vursavus K. K. , OZGUVEN F., SINN H.

International Conference on Trends in Agricultural Engineering, PRAGUE, Czech Republic, 15 - 17 September 1999, pp.106-111 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • City: PRAGUE
  • Country: Czech Republic
  • Page Numbers: pp.106-111

Abstract

In this study, compression test was performed by using Instron Testing Machine 4300 Series 8 mm diameter die and 6 mm/min crosshead speed (loading rate) was used during the test. According to the results, cultivar had an effect significantly on deformation energy and modulus of elasticity at the P<0.01 level, and no effect on deformation volume. Position also had ail effect significantly on deformation? energy and deformation volume at the P<0.05 level, and no effect on modulus of elasticity at the both levels. With respect to results concerned to some mechanical properties of four different cultivars, Braeburn apple had highest modulus of elasticity of 4.88 N/mm(2) and Granny Smith apple had least modulus of elasticity of 2.37 N/mm(2). Impact test results relaxed to bruising damage indicated that bruising damage increased with decreasing modulus of elasticity. Moreover, modulus of elasticity decreased with increasing bruising resistance coefficient expressing susceptibility, to damage. As a result, Granny Smith apple was too susceptible to damage compared to Braeburn apple.