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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"unit load"”.
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Investigation of Pallet Stacking Pattern on Unit Load Bridging
… over two billion pallets in circulation in the United States, most packaged products are handled using unit loads and the interactions between the unit load components are not being considered in the pallet design process. This study aims to investigate the effect of the interlocking of layers …
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Evaluation of Unit Load Stability Under Dynamic Forklift Handling Conditions
… products are transported in bulk as palletized unit loads, where the pallet is the base of the unit load. Material handling systems represent the physical environment in which unit loads are transported through supply chains. Material handling systems include different transportation modes and …
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Correlation of the Elastic Properties of Stretch Film on Unit Load Containment
… and were used to predict its performance in unit load containment. Applied stretch film is currently compared measuring containment force, which current standards define as the amount of force required to pull out a 15.2cm diameter plate, 10.1cm out, located 25.4cm down from the top and …
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Modeling of the fundamental mechanical interactions of unit load components during warehouse racking storage
… methodologies frequently underestimate the load carrying capacity of pallets by assuming they will only carry uniformly distributed, flexible payloads. But, by considering the effect of various payload characteristics and their interactions during the pallet design process, the structure of …
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Effect of Pallet Deckboard Stiffness and Unit Load Factors on Corrugated Box Compression Strength
… the deckboard is the beam. Rotational stiffness, load bridging, and foundation stiffness changes required the development of novel testing solution and model development. The model was capable of predicting the distribution of force along the length sidewall but was not capable of predicting the …
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The effect of venting configuration on the blast response of an aircraft unit load device
The inclusion of venting areas in aircraft unit load devices (ULDs) as a potential blast mitigation technique is investigated in this work. Damage to the ULD, such as large deflections or container rupture, from an internal explosion threatens to tear the aircraft skin and cause fuselage …
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The Effect of the Stiffness of Unit Load Components on Pallet Deflection and Box Compression Strength
Currently, pallets are designed assuming that the load is distributed evenly on the top of the pallet. When pallets are loaded with packages such as corrugated boxes or returnable plastic containers, due to their physical shape, packages, are not capable of deforming freely with the pallet and a …
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Investigation of the Environmental Effect of Unit Load Design Optimization Using Physical Interaction Between Pallets and Corrugated Boxes
… transported through the supply chain system in unit load form consisting of pallets, corrugated boxes, and load stabilizers. Hence, it is important to holistically understand the environmental impact of not only individual packaging levels, but also the unit load form. We can use the …
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From Road to Laboratory: A Data-Driven Framework for Field-Aligned Simulation of Braking Dynamics Toward Sustainable Unit Load Packaging
… existing laboratory test methods for evaluating unit load stability still fall short of replicating the dynamic forces that occur during freight transportation. This study addressed that gap with an overarching objective to advance performance based and resource efficient packaging design by (1) …
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Modeling the Dynamic Interactions between Wood Pallets and Corrugated Containers during Resonance
The unit load is the form of most commercial and industrial products during storage and distribution. A simple form of a unit load, a palletized bulk bin is commonly used to transport fruit and vegetables from the point of harvest to processing facilities. These vibration sensitive products are …
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Evaluation of the Pallet Deflection that Occurs Under Forklift Handling Conditions
… by forklifts due to the weight of the unit load. Thus, most of the deflection is observed to occur on the outside edges and corners of the pallet. Several international standards are used in order to define the maximum deflection for pallet bending, including ISO 8611 and ASTM D1185. …
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Investigation of Fundamental Relationships to Improve the Sustainability of Unit Loads
… packaging components rather than an integrated unit load. In global supply chains, three levels of packaging components (primary, secondary, and tertiary) are commonly assembled in the unit load form to facilitate efficient and economical storage and transport of goods to customers. Unit loads …
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Investigation and Analysis of the Effect of Industrial Drums and Plastic Pails on Wooden Pallets throughout the Supply Chain
… of investigating how box stacking pattern, unit load type, unit load size, and containment can impact the pallet's performance. However, there have been no studies that have investigated the impact of drums and plastic pails on pallet performance. The goal of the current research study was …
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Studies of wood pallet response to forced vibration
… vibrations are transmitted through pallets into unit-loads. Pallet response to forced vibration affects forces experienced by products. A study was conducted to determine how pallet design influenced the resonant response of a uniformly distributed case goods unit-load. other studies were …
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The Effect of Load Stabilizer Selection on Load Shift Within Unit Loads
Research on unit load stability aids manufacturing facilities in selecting the most efficient load stabilizer when shipping their products to market. This study's objective was to compare the performance a variety of different commonly used load stabilizers to stretch hooding. Stretch hooding is a …
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Modeling Compressive Stress Distributions at the Interface between a Pallet Deck and Distribution Packaging
… and material handling equipment, of the unit load portion of the supply chain are physically and mechanically interacting during product storage and shipping. Understanding the interactions between two primary components, a pallet and packaging, in a unit load is a key step towards supply …
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The Effect of Pallet Top Deck Stiffness on the Compression Strength of Asymmetrically Supported Corrugated Boxes
During unitized shipment, the components of unit loads are interacting with each other. During floor stacking of unit loads, the load on the top of the pallet causes the top deck of the pallet to bend which creates an uneven top deck surface resulting in uneven, or asymmetrical support of the …
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Finite Element Modeling of Plastic Pails when Interacting with Wooden Pallets
… transport products: the pallet, the package, and unit load stabilizers. The interactions between these three components can be investigated to understand the relationship between them to find potential optimization strategies. The relationship between corrugated boxes and pallets have been …
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A design methodology for operational control elements for automatic guided vehicle based material handling systems
… are vehicle dispatching, vehicle routing, unit load size selection, job sequencing, shop loading, queue constraints, and capacity constraints due to vehicles and machines. A job in the shop is considered to consist of one or more parts grouped in portable unit load sizes. Therefore, it is …
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Fatigue optimization of an induction hardened shaft under combined loading
… subjected to combined bending and torsional loading. Finite element analysis is used first to develop unit-load factors for generating stress-time histories, and then, employing thermo-elastic techniques, to determine the residual stresses resulting from induction hardening. These stress …
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