本文選題：河套蜜瓜　切入點(diǎn)：沖擊特性　出處：《內(nèi)蒙古農(nóng)業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：針對(duì)采摘、運(yùn)輸、分級(jí)等過程中沖擊碰撞作用引起蜜瓜品質(zhì)下降的問題,本研究選取河套蜜瓜為研究對(duì)象,進(jìn)行沖擊跌落試驗(yàn),探究了沖擊碰撞作用下蜜瓜的力學(xué)特性。在此基礎(chǔ)上,研究了貯藏期內(nèi)沖擊參數(shù)對(duì)蜜瓜品質(zhì)的影響,并建立了各品質(zhì)指標(biāo)與沖擊參數(shù)的數(shù)學(xué)模型。本研究根據(jù)實(shí)際工況,選取的試驗(yàn)因素為蜜瓜質(zhì)量、跌落高度、跌落位置和跌落次數(shù),進(jìn)行跌落沖擊試驗(yàn)。結(jié)果表明:沖擊加速度和變形量隨跌落高度、蜜瓜質(zhì)量和跌落次數(shù)的增加而增加;水平跌落的加速度小于垂直跌落,但變形大于垂直跌落。通過正交試驗(yàn),得出蜜瓜的跌落碰撞過程中,對(duì)沖擊加速度的影響順序是跌落高度跌落次數(shù)蜜瓜質(zhì)量跌落位置;對(duì)變形量的影響順序是跌落高度跌落位置跌落次數(shù)蜜瓜質(zhì)量。測(cè)定了受沖擊作用的蜜瓜在貯藏期的硬度、可溶性固形物含量和細(xì)胞膜滲透率,通過MATLAB軟件建立了以跌落高度、跌落位置、跌落次數(shù)為自變量,蜜瓜硬度、可溶性固形物含量、細(xì)胞膜滲透率為因變量的數(shù)學(xué)模型,并分析了沖擊因素與品質(zhì)指標(biāo)的相關(guān)性。上述研究結(jié)論可為蜜瓜的無損檢測(cè)、預(yù)測(cè)蜜瓜品質(zhì)變化、設(shè)計(jì)合理的運(yùn)輸方式和包裝方式提供理論依據(jù)。
[Abstract]:In order to solve the problem that the quality of honeydew melons decreases due to the impact collision in picking, transportation, grading and so on, Hetao honeydew melon was selected as the research object in this study, and the impact drop test was carried out. The mechanical properties of honeydew melon under impact impact were investigated. On the basis of this, the effect of impact parameters on the quality of honeydew melon during storage period was studied, and the mathematical models of each quality index and impact parameter were established. The results showed that the impact acceleration and deformation increased with the increase of drop height, drop height, drop position and drop times. The acceleration of horizontal drop is smaller than that of vertical drop, but the deformation is larger than that of vertical drop. The order of influence on deformation was drop height drop number drop number drop quality. The hardness, soluble solids content and cell membrane permeability were measured during storage period. Drop height was established by MATLAB software. The mathematical model of falling position, drop times as independent variable, melon hardness, soluble solids content, cell membrane permeability as dependent variables, The above conclusions can provide theoretical basis for nondestructive testing, prediction of melon quality change, design of reasonable transportation mode and packaging mode.
【學(xué)位授予單位】：內(nèi)蒙古農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：S652.1

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本文編號(hào)：1564011