The transport of freshly post-harvested fruit to its collection point is mainly achieved using trailers over uneven terrain, which generates impacts and vibrations that negatively affect the quality fruit. Although some solutions mitigate these effects have been proposed in previous studies, none them are applied directly source problem, i.e., boxes. In this context, metamaterial sheets inspired by design quasi-zero stiffness isolators (QZSs) open up possibility exploring ways vibration...

Olive has a notable importance in countries of Mediterranean basin and its profitability depends on several factors such as actual yield, production cost or product price. Actual "on year" Yield (AY) is (kg tree-1) years", this research attempts to relate it with geometrical parameters the tree canopy. Regression equation forecast AY based manual canopy volume was determined data acquired from different orchard categories cultivars during harvesting seasons southern Spain. Orthoimages were...

Proven methods of battery diagnosis exist in the industry based on measurement internal impedance from cell to cell. Nevertheless, these maintenance methodologies are incompatible with operation industrial traction batteries due great variations ambient temperature, paralyzation needed, and access difficulty. This paper benefits tested stationary standards includes innovative proposals order take into account operating conditions. The difficult accessibility finds a solution quicker safer...

The fruit harvesting is a key factor involving both product quality and profitability. Particularly, mechanical of traditional oil olive orchards hint by tree training system for manual harvesting, size several slanted trunks which makes difficult trunk shaker work. Therefore, canopy technology could be feasible alternative to develop an integral harvester able work on irregular canopies. aim this research was determine vibration parameters applied the efficient measuring removal efficiency...

The estimation of fruit load an orchard prior to harvest is useful for planning logistics and trading decisions. manual counting the determination harvesting capacity field results are expensive time-consuming. automatic fruits their geometry characterization with 3D LiDAR models can be interesting alternative. Field research has been conducted in province Cordoba (Southern Spain) on 24 ‘Salustiana’ variety orange trees—Citrus sinensis (L.) Osbeck—(12 were pruned 12 unpruned). Harvest size...

Olive fruit production and oil quality distribution with respect to canopy are important criteria for selection improvement of mechanical harvesting methods. Tests were performed in a high-density olive orchard (Olea europea L., cv. Arbequina) southern Spain. Fruit distribution, properties parameters measured by taken separate samples each location tree. Results showed high percentage fruits located the middle-outer upper canopy, representing more than 60% total production. The position...

Cold storage of olive fruit has been the subject study for over more than 50 years. From 1990s on, an increasing amount knowledge is build-up about impact conservation on physiological response as well quality extracted oil therefrom. This review offers a comprehensive synopsis this research, discusses most important influential factors and summarizes results influence studied parameters both oil. Currently, changing climatic conditions, new harvesting techniques demanding consumer market...

This work presents a characterisation of the fruit and bruising caused by some common detachment methods (manual, stick, shaker comb, branch shaker) interception (net or padding) in table olive varieties. We took pictures samples inside special device, images were processed to extract characteristic parameters shape size (number spots, Feret diameter, circularity, colours …). Moreover, we studied time evolution on controlled impact. Finally, developed system that allows synchronised rotation...

In the table olive sector, there is no cleaning and fruit sorting by quality in field of harvested batches, nor an exhaustive recording traceability. As a result, batches are stored shipped dry, dirty with different qualities. When they arrive at industry, cleaned sorted according to their quality, maturity index size into suitable for green or black processing unsuitable oil processing. Overall, all fruits mixed regardless origin leading loss interruption traceability, so that also...

The introduction of a mechanical harvesting process for oranges can contribute to enhancing farm profitability and reducing labour dependency. objective this work is determine the spread vibration in citrus tree canopies establish recommendations reach high values fruit detachment efficiency eliminate need subsequent hand-harvesting processes. Field tests were carried out with lateral tractor-drawn canopy shaker on four commercial plots sweet oranges. Canopy during was measured set triaxial...

Crown porosity influences radiation interception, air movement through the fruit orchard, spray penetration, and harvesting operation in crops. The aim of present study was to develop an accurate reliable methodology based on transmitted measurements assess traditional olive trees under different pruning treatments. Transmitted employed as indirect method measure crown two orchards Picual Hojiblanca cultivars. Additionally, three treatments were considered determine if system porosity. This...

Abstract Computer-aided design, manufacturing and engineering technologies (CAD/CAM/CAE) are a mainstay in today’s industry therefore they should be an important part the current training plan of graduate engineers. However, their implementation university environment presents certain barriers that make it difficult. In this work, we study feasibility teaching proposal management type tools through Project-Based Learning method distance learning environment. The methodology has been...

Harvesting in intensive olive orchards is usually performed with trunk shakers. Many challenges remain both to the implementation of integral harvesting systems and improving their detachment efficiency without a dependence on manual labour. This work develops prototype over-the-row harvester that incorporates two which can simultaneously: shaker canopy The objective characterise dynamic effect each system determine best configuration for damage control regarding feasibility use. isolation...

The present study analyses the transmission of vibrations generated from a multidirectional trunk shaker to olive tree structure considering both aerial zone (trunk and branches) underground (the coarse root). vibration characterization was conducted by measuring acceleration on several points during harvesting operations. influence two different heights head clamping analysed. In addition, dynamic probing performed in order evaluate soil compaction. results showed that head, corresponding...