BRUISE RESISTANCE OF APPLES (MELROSE VARIETY)
Krzysztof Gołacki, G. Bobin, Zbigniew Stropek
Abstract
Krzysztof Gołacki, G. Bobin, Zbigniew Stropek
Abstract
Summary. The paper includes the results of the impact research on apples of the Melrose variety dropped onto the force sensor from different heights. Force-time profi les, bruise area and volume were recorded. To determine bruise resistance, the CHMI technique (constant height multiple impact) was adopted. The fi ve impact heights which guaranteed the bruise incidence at dropping were selected: 20 mm, 35 mm, 50 mm, 70 mm, 80 mm. Based on the research results, it was stated that bruise resistance coeffi cient in function of impact height for fresh and stored apples proved to be the lowest for the low impact heights (20 mm) and it increased by several times along with the height drop. Mathematical model for the rebound height stabilisation process during consecutive impacts by the exponential function was proposed.
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Summary. The paper includes the results of the impact research on apples of the Melrose variety dropped onto the force sensor from different heights. Force-time profi les, bruise area and volume were recorded. To determine bruise resistance, the CHMI technique (constant height multiple impact) was adopted. The fi ve impact heights which guaranteed the bruise incidence at dropping were selected: 20 mm, 35 mm, 50 mm, 70 mm, 80 mm. Based on the research results, it was stated that bruise resistance coeffi cient in function of impact height for fresh and stored apples proved to be the lowest for the low impact heights (20 mm) and it increased by several times along with the height drop. Mathematical model for the rebound height stabilisation process during consecutive impacts by the exponential function was proposed.
Key concepts: Bruise, Mathematics, Exponential function, Volume (thermodynamics), Drop (telecommunication), Computer science, Physics, Surgery