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Determining the strength properties of the Dixired peach variety

机译：确定Dixired桃品种的强度特性

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摘要

Peaches, like other fruits, are susceptible to different kinds of damage during and after harvest. Such damage is a major cause of quality loss in fruit. In order to reduce these losses, it is necessary to know the strength properties of fruit. Somestrength properties of "Dixred" peaches are investigated in this paper. Peaches were stored at 0 deg C and 90 percent relative humidity for specified lengths of time. Impact treatment was applied by a pendulum irnpactor at four energy levels. Bruise volume was measured in the bruised peaches after impact, and bruise susceptibility was calculated from the linear regression line for bruise volume vs. absorbed energy. Strength properties (bio-rupture force, apparent modulus of elasticity and rupture stress) were determined by using a biological material test device. It was found that the peaches exhibited superior strength properties immediately after harvest, and that after 14 days in storage they softened rapidly. At harvest, it was calculated that peaches could be packed in corrugated boxes up to about 13 layers deep in a triangular arrangement and 16 layers deep in a rectangular arrangement without damage, while 28 days after storage they could be packed only 4 to 6 layers deep in the boxes. According to impact treatment, the fruit softened and became very susceptible to impact damage during periods exceeding 14 days.
机译：桃子和其他水果一样，在收获期间和收获后容易受到不同程度的损害。这种损害是水果品质下降的主要原因。为了减少这些损失，有必要知道水果的强度特性。本文研究了“混合”桃子的某些强度特性。将桃子在0摄氏度和90％的相对湿度下存储指定的时间长度。摆锤在四个能级上进行冲击处理。在撞击后，测量瘀伤桃子中的瘀伤量，并从瘀伤量与吸收能量的线性回归线计算出瘀伤敏感性。强度特性（生物断裂力，表观弹性模量和断裂应力）通过使用生物材料测试装置确定。发现桃子在收获后立即表现出优异的强度特性，并且在储存14天后它们迅速软化。据计算，在收获时，桃子可以装在瓦楞纸箱中，成三角形排列，深约13层，矩形排列，深达16层，而不会损坏，而储存28天后，它们只能包装成4至6层深在盒子里。根据冲击处理，在超过14天的时间内，果实变软并变得非常容易受到冲击破坏。

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