%0 Journal Article %A R.Abbaszadeh and A.Rajabipour and M.Delshad and M.J.Mahjub and H.Ahmadi %D 2011 %J International Journal of Agricultural and Biosystems Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 54, 2011 %T Prediction of Watermelon Consumer Acceptability based on Vibration Response Spectrum %U https://publications.waset.org/pdf/2289 %V 54 %X It is difficult to judge ripeness by outward characteristics such as size or external color. In this paper a nondestructive method was studied to determine watermelon (Crimson Sweet) quality. Responses of samples to excitation vibrations were detected using laser Doppler vibrometry (LDV) technology. Phase shift between input and output vibrations were extracted overall frequency range. First and second were derived using frequency response spectrums. After nondestructive tests, watermelons were sensory evaluated. So the samples were graded in a range of ripeness based on overall acceptability (total desired traits consumers). Regression models were developed to predict quality using obtained results and sample mass. The determination coefficients of the calibration and cross validation models were 0.89 and 0.71 respectively. This study demonstrated feasibility of information which is derived vibration response curves for predicting fruit quality. The vibration response of watermelon using the LDV method is measured without direct contact; it is accurate and timely, which could result in significant advantage for classifying watermelons based on consumer opinions. %P 365 - 368