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Sunday, July 26, 2020 | History

2 edition of Instrumented sphere impact evaluation and apple bruise susceptibility determination found in the catalog.

Instrumented sphere impact evaluation and apple bruise susceptibility determination

Weihua Zhang

Instrumented sphere impact evaluation and apple bruise susceptibility determination

by Weihua Zhang

  • 164 Want to read
  • 38 Currently reading

Published .
Written in English

    Subjects:
  • Apples -- Mechanical properties.,
  • Apples -- Quality -- Measurement.,
  • Apples -- Effect of temperature on.

  • Edition Notes

    Statementby Weihua Zhang.
    The Physical Object
    Paginationxii, 131 leaves, bound :
    Number of Pages131
    ID Numbers
    Open LibraryOL16949067M

    impact. For the same amount of energy, bruised areas were approximately 40% higher under slow compression. The experimental results were compared with a finite element analysis of a static and dynamic loading of an apple. The application of the Hertz theory to bruise initiation was. BIRD (Berry Impact Recording Device) is a miniature instrumented sphere for measuring impact acceleration of small fruits such as blueberries. The BIRD sensor is cast in silicone rubber as an ‘instrumented sphere’ with mm in diameter, developed by a research team in Georgia (USA) [ 5 ].Cited by:

    Impact data must be related to bruise susceptibility of each fruit type by establishing impact damage thresholds of the products. Garcia et al. [ 14, 15 ] evaluated the effect of different materials and decelerator elements of the packing lines in fruit bruising, and obtained a reduction of 30 g in the mean impact. Mechanical loads cause severe damage to perishable agricultural products. In order to quantify the mechanical impact during harvest and postharvest processes, several electronic fruits have been developed. The objective of the work described here was to compare on a laboratory scale different types of impact acceleration recording electronic fruits: Mikras implanted in a real potato tuber as Cited by:

    It is important to remember that fruits and vegetables continue to metabolize, synthesize, and catabolize after harvest. In order to study the chemical and physiological mechanisms of textural changes during the development and senescence of fruits and vegetables, it is critical to be able to measure the by: of the impact testing with application of a sphere of known dimensions and mass allowed to evaluate fruit fi rmness in the sorting lines [Chen et al., , Delwiche et al., ]. Apple resistance to impact bruising was also established using the method single fruit impact.


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Instrumented sphere impact evaluation and apple bruise susceptibility determination by Weihua Zhang Download PDF EPUB FB2

Figure Instrumented Sphere data resulting from the impacts produced as the sphere fell into a final size packing bin, during commercial grading operations on Gala apples. Impact pulses recorded by an Instrumented Sphere (IS) as it moved with apples through 12 commercial apple packing lines were analyzed to determine peak g and velocity change.

The tomatoes’ susceptibility to bruise damage appeared to be dependent on the location of impact and cultivar, and was most simply expressed as a function of the applied impact energy. dropping the electronic fruit, IS (Instrumented Sphere) onto different surfaces and associating the impact Instrumented sphere impact evaluation and apple bruise susceptibility determination book to the size of the bruise suffered by apples within a specific size and weight range fell from the same distance onto the same surface in order to estimate of bruise damage.

Varith et al. Comprehensive understanding of bruise damage caused by apple-to-apple impacts is beneficial to design a low-impact fruit capturing mechanism for mass (shake-and-catch) harvesting, as well as to. A simple method to determine the bruise susceptibility of tomatoes is a first requirement to close that instrumented pendulum is presented as an appropriate instrument to conduct controlled.

2) Measure the bruise susceptibility of apples for different storage times under different levels of impact energy; and. 3) Develop quantitative prediction models relating the hyperspectral scattering features to the apple bruise susceptibility measured by impact Cited by: A simple method to determine the bruise susceptibility of tomatoes is a first requirement to close that gap.

An instrumented pendulum is presented as an appropriate instrument to conduct controlled impact experiments on tomato fruit. An evaluation method of the subsequent damage is by: In apples, fruit texture was shown as a major contributor to bruise susceptibility and might vary considerably within the fruit (Khan and Vincent, a, Khan and Vincent, b).

Fruit turgidity and firmness have also been reported to influence impact bruise susceptibility Cited by: This artificial fruit – also referred to as an instrumented sphere (IS), electronic fruit, or impact recording device (IRD) – consists of a triaxial accelerometer covered by a spherical plastic sheath to mimic real fruit in weight, diameter and : Yeşim Benal Öztekin, Büşra Güngör.

Influence of Contact Surface Type on the Mechanical Damages of Apples Under Impact Loads have been used, i.e., to determine the bruise susceptibility in apple. Key parameters in assessing this phenomenon include impact level necessary to calculate the impact energy and vol-Cited by: 6.

Neural bruise prediction models based on the degree of fruit damage of the most traded fruit species and varieties were developed for prediction of the fruits to be accepted or rejected.

For impact bruise susceptibility assessment the impact firmness tester was also used. K., 25 years experience with the Bornim Instrumented sphere Cited by: conducted using an instrumented free falling mass ( g) with a 20 mm diameter spherical head, dropped onto the fruit from a height of 8 cm.

Impact parameters (máximum forcé and deformation) were recorded and bruises produced were measured. Bruise size measurement.

Bruises were allowed to develop for over 2 h. A section was taken by cutting. Comprehensive understanding of bruise damage caused by apple-to-apple impacts is beneficial to design a low-impact fruit capturing mechanism for mass (shake-and-catch) harvesting, as well as to design other fruit handling devices.

This study quantified the bruising severity in ‘Jazz’ apples induced by different levels of impact upon various fruit surface : Han Fu, Manoj Karkee, Long He, Jieli Duan, Jun Li, Qin Zhang.

Determination of the dynamical behaviour of biological materials during impact using a pendulum device. Journal of Sound and Vibration. v Google Scholar; Van Zeebroeck et al, a.

The effect of fruit properties on the bruise susceptibility of tomatoes. Postharvest Biology and Technology. v Google Scholar; Van Zeebroeck Author: ZarifneshatSaeed, RohaniAbbas, GhassemzadehHamid Reza, SadeghiMorteza, AhmadiEbrahim, ZarifneshatMas.

Impact bruises were produced by dropping apples from a measured drop height on a. counterface surface. Three types of impact counterface material were used to. comparatively test the different apple bruises: double wall cor rugated fiberboard, rubber, and wood.

In this study, drop heights were 5, 10, 15, 20, 30, 40, and The pressure measuring sphere PMS (Magnettech, Berlin, Germany) has a spherical form and was used amongst others for determining damage of apples and onions during postharvest handling [3,4]. BIRD (Berry Impact Recording Device) is a miniature instrumented sphere for measuring impact acceleration of small fruits such as by: Apple bruising is one of the major causes for economic losses for apple farmers in BC.

In this study, the bruise threshold, bruise susceptibility, and bruise volume of the BC Royal Gala Apple were investigated as a function of impact energy.

Impact energy was varied using a pendulum testing technique with regular height intervals of 2 cm. Additionally, turgor pressure was adjusted for by. Instrumented sphere (IS) was utilised to evaluate several surfaces used in harvesting and handling potatoes (Lady Rosetta cultivar) by dropping the IS from 5 to 90 cm.

The minimum dropping heights causing unallowable damage w 15, and 25 cm on steel sheet, steel rods, and rubber-coated steel rods, respectively. However, the two-layer potato surface caused no unallowable damage. Effects of precooling and degreening treatments on the susceptibility of peach and citrus to handling damage.

In: (). Florida citrus packing line studies with an instrumented sphere. Impact bruise estimates for onion packing lines. (). Performance of an instrument designed for, and evaluation of methods to assess, peach fruit impact bruise susceptibility.

Journal of Food Quality – Google ScholarCited by: (). Evaluation and correction of the mechanical aggressiveness of comercial sizers used in store fruit parking lines. (). Evaluation of tomato harvesters using the IS ().

Instrument for Testing the Response of Fruits to Impact Force. (). Instrumented sphere impact analyses of tomato and bell pepper packing lines. (). This paper presents an analysis of mechanical damage carried out on ‘Golden Delicious’ apple variety, which was subjected to impact loads during free drop against various rigid plates.

For this purpose, an analysis of the contact pressure based on determined contours and surface pressure distributions at the contact point between the fruit dropped from various heights against fixed hard Cited by: 6.