Determining the resistance to mechanical damage of apples under impact loads

Stopa, Roman; Szyjewicz, Daniel; Komarnicki, Przemysław; Kuta, Łukasz

doi:10.1016/j.postharvbio.2018.08.016

Cited by 47 publications

(20 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The force-deformation data were recorded by a computer in real-time. Lastly, the mechanical parameters of strawberry tissues such as elastic modulus E c , failure stress σ c , failure strain ε c and failure energy E rec were derived using Equations 7-10 (Li et al, 2012;Stopa et al, 2018). In total, 30 strawberry tissue samples (5 samples × 2 tissue types × 3 compression speeds) were tested.…”

mentioning

confidence: 99%

Characterization of textural failure mechanics of strawberry fruit

Zude-Sasse

et al. 2020

Journal of Food Engineering

View full text Add to dashboard Cite

Fresh strawberry fruit is highly susceptible to damage during mechanical handlings. To prevent fruit macro-damage from external forces and predict damage evolution in internal tissues, the textural failure mechanics of strawberry fruit and its tissues were characterized by loading-unloading tests at different compression speeds. Strawberry fruit showed expected three stages of deformation during the loading phase, namely elastic, local plastic and structural failure deformation. Their cutoff points depended on the compression speed and loading direction, which was validated further by the corresponding visible browning processes in tissues from fruit longitudinal equatorial section. The peak force and absorbed energy depended on the loading direction and compression speed while the percentage of damaged mass only depended on the loading direction. The fruit was most susceptible to mechanical damage when it was compressed along its stem-blossom axis at low percentage deformation and along its radial axis at high percentage deformation. The absorbed energy and percentage of damaged mass of the strawberry fruit was correlated, which suggested that the absorbed energy could be an appropriate and easily measurable mechanical parameter for quantitatively assessing the degree of fruit damage. The failure stress, failure energy and elastic modulus of fruit tissues increased with the compression speed, while this factor did not affect the failure strain. The average failure stress, failure strain, failure energy and elastic modulus of fruit inner tissue were 0.093

show abstract

mentioning

confidence: 99%

Characterization of textural failure mechanics of strawberry fruit

Zude-Sasse

et al. 2020

Journal of Food Engineering

View full text Add to dashboard Cite

show abstract

“…Due to the fall height, velocity of olive fruit (three different angles of 0°,45°, 90°) was determined in the y direction (Figure 5 ). Literature of different fruits was presented as increasing drop height, the value of produced stress, and energy were increased (Gao et al., 2018 , Celik, 2017 , Li and Thomas, 2014, Jiménez‐Jiménez et al., 2013 , Yousefi et al., 2016 , Stopa et al., 2018 ). Hence, in this study a height of 1m was used for experimental and simulation.…”

Section: Methodsmentioning

confidence: 99%

Measurement bruise volume of olive during impact test using FEM and quality evaluation of extracted olive oil

Rashvand

Akbarnia

Abbaszadeh

et al. 2021

Food Science & Nutrition

View full text Add to dashboard Cite

Mechanical damage of fruit is one of the consequences of inappropriate harvesting and postharvest process (Lu & Lu, 2017).Nowadays, the harvesting of agriculture products is mechanized by different harvesting machines and then transferred to food industry for postharvest operations (Komarnicki et al., 2017). The shape of damage depends on the physical and biological structure of the product as well as the type of load (static, dynamic, and oscillating).These occurrences sometimes damage the internal tissue of the fruit which not only spoils the fruit tissue but also leads to discharging the material of the inside cell and spreading damage (Li et al., 2017).Usually, bruising caused by the impact is not detectable immediately and depending on the flesh and biological characteristics of the fruit, it is observable after a few hours (Scheffler et al., 2018).On the other hand, the water and much carbohydrate content which contribute to the metabolic processes lead to an increasing bruised area. This damage of fruit's skin remains even after the fermentation

show abstract

“…The destruction of the internal structure of the fruit caused by the deconstruction experiment affects the measurement accuracy of the mechanical properties. In order to reduce significant errors in the measured fruit mechanical properties through physical experiments, image processing technology and digital modeling technology are used to measure the amount of fruit deformation, contact area (Gharaghani & Maghsoudi, 2018), and mechanical damage sensitivity (Stopa, Szyjewicz, Komarnicki, & Kuta, 2018). However, the shape and internal structure of agricultural products are so complex that it is difficult to accurately obtain their mechanical properties by mechanics experiments.…”

Section: Practical Applicationsmentioning

confidence: 99%

Finite element simulation of mechanical properties of Rosa roxburghii under compression loading

Lang

Xie

Chen

2021

J Food Process Engineering

View full text Add to dashboard Cite

It is very necessary to understand the mechanical properties of Rosa roxburghii fruit for harvesting, packaging, processing, transportation, storage, and related equipment design and improvement. This research was to determine the mechanical properties of R. roxburghii fruits through compressive experiments and finite element simulations and to verify the accuracy of the finite element model. In order to achieve finite element analysis, an accurate three-dimensional (3D) geometric model was reconstructed by applying 3D laser technology and point cloud reconstruction algorithm. The elastic modulus and Poisson's ratio of R. roxburghii fruits were determined to be 4.0 MPa and 0.35 through experiments. The finite element simulation results provided valuable numerical data and visualized stress distribution. The simulation results showed that R. roxburghii fruits were damaged under the loads of 156.2 N (vertical) or 148.3 N (horizontal), with a maximum deformation of 5.0 mm (vertical) or 6.93 mm (horizontal), respectively. In the vertical and horizontal compression posi-

show abstract

Determining the resistance to mechanical damage of apples under impact loads

Cited by 47 publications

References 40 publications

Characterization of textural failure mechanics of strawberry fruit

Characterization of textural failure mechanics of strawberry fruit

Measurement bruise volume of olive during impact test using FEM and quality evaluation of extracted olive oil

Finite element simulation of mechanical properties of Rosa roxburghii under compression loading

Contact Info

Product

Resources

About