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Showing 1 to 20 of 41 for “"adhesive joints"”.
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FAILURE MECHANISMS OF STRUCTURAL ADHESIVE JOINTS
… of different levels of moisture on epoxide adhesive (BGEBA/DAB) joints has been investigated. On exposure up to 10 080 hours, using sandblasting treatment on aluminium prior to bonding, the joint strength had decreased far more rapidly at higher activities above 0.7 than at lower activities. …
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Structural modelling of adhesive joints in automotive bodies
… a vehicle is dependent on the stiffness of the joints between the sheet components in the body shell. Although spot-welding is the predominant joining method for the construction of steel bodies in the automotive industry, other alternatives are now being considered. Adhesive bonding offers the …
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The durability of adhesive joints: an engineering study
Water diffusion through the adhesive is the rate controlling factor for the durability of many metal-to-polymer bonds exposed to moist environments. A methodology is proposed, to relate the diffusion coefficient of water in polymers to temperature, strain and penetrant concentration. The approach …
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Durability of Adhesive Joints Subjected to Environemntal Stress
… can degrade the mechanical properties of the adhesive, as well as the integrity of an adhesive interface with a substrate. Therefore such disruptions can significantly reduce the lifetime and durability of an adhesive joint.1-4 In this research, the durability of certain epoxy adhesive joints …
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Mechanical Behavior of Adhesive joints Subjected To Thermal Cycling
… upon the thermal cycling profile and the adhesive’s thermo-mechanical response. Discussion of the results focuses on the probability that the incrementing tensile residual stresses induced in an adhesive bond subjected by thermal cycling may lead to damage and debonding, thus reducing …
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BOND STRENGTH EVALUATION IN ADHESIVE JOINTS USING NDE AND DIC METHODS
Adhesive bonding of graphite epoxy composite laminates to itself or traditional metal alloys in modern aerospace and aircraft structural applications offers an excellent opportunity to use the most efficient and intelligent combination of materials available thus providing an attractive package for …
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Fracture Mechanics Approach to Adhesive Joints Under Opening and Combinedmode Loading
Made available in DSpace on 2014-12-12T00:25:48Z (GMT). No. of bitstreams: 1 7219948.pdf: 2852566 bytes, checksum: 8fe9eae8a1d82419872d1b887f04bc45 (MD5) Previous issue date: 1972
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Nondestructive evaluation of structural silicone adhesive joints in building evelope systems
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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Deformation and fracture of PMMA with application to nanofoaming and adhesive joints
… explores the fracture behaviour of structural adhesive (e.g. MMA)-based joints. An adhesive layer within such a joint is prone to defects such as (micro)voids and (micro)cracks. The ability to accurately predict the failure strength of adhesive joints as a function of pore or crack size is …
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Global-local Finite Element Fracture Analysis of Curvilinearly Stiffened Panels and Adhesive Joints
… the so-called unitized structures, and that of adhesive joints. A damage tolerance study of the unitized structures requires cracks to be defined in the vicinity of the critical stress zone. With the damage tolerance study of unitized structures as the focus, responses of curvilinearly stiffened …
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A feasibility study of PVDF piezoelectric sensors to detect damage in adhesive joints
… thin and light-weight, they can be attached to adhesively bonded joints permanently to measure bond integrity. The present study shows the different steps to design such sensors and proper techniques to attach them near the adhesive bondline. PVDF sensors have been successfully used as NDT …
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The development of poly(vinylidene fluoride) piezoelectric sensors for measuring peel stresses in adhesive joints
… responsible for the failure of most laboratory adhesive joint geometries, the measurement of these stresses has been accomplished only through the use of very sophisticated optical techniques. In order to develop a more versatile measurement technique, poly(vinylidene fluoride) film was used to …
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A combined analytical, numerical and experimental technique for investigating stress-singularity effects on Very High Cycle Fatigue of adhesive joints
L'abstract è presente nell'allegato / the abstract is in the attachment
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Modeling of active crack damage control and the active fatigue damage control of adhesive joint
… with active fatigue damage control of adhesive joints. The damage and active control mechanisms of the adhesive joints have been experimentally and theoretically investigated.
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New Fatigue Test Method for Evaluating the Performance of Adhesive Bonded Joints
… typically via multi-materials combination and adhesive bonding. However, the differences in physical, chemical, and mechanical behaviour of the individual constituent materials once joined together creates a much more complex system than is the case for monolithic materials. The majority of …
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Evaluating Thermal and Mechanical Properties of Electrically Conductive Adhesives for Electronic Applications
… long-term durability of electrically conductive adhesives for electronic interconnection applications. Three model conductive adhesives, designated as ECA1, ECA2 and ECA3, supplied by Emerson & Cuming, were investigated, in conjunction with printed circuit board (PCB) substrates with …
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Model adhesive studies using block copolymers
The diversity of adhesive/adherend pairs has created innumerable unique combinations of thermodynamic, kinetic, chemical, physical and rheological contributions with which to explain adhesion processes. So complex are the interrelationships of these contributions to the overall composite system …
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Adhesive bonding of stainless steel :Sstrength and durability.
Adhesive bonding as an alternative method of joining materials together has many advantages over the more conventional joining methods such as fusion and spot welding, bolting and riveting. For example, adhesives can be used to bond dissimilar materials, adhesive joints have a high stiffness to …
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Adhesive bonding of stainless steel : strength and durability
Adhesive bonding as an alternative method of joining materials together has many advantages over the more conventional joining methods such as fusion and spot welding, bolting and riveting. For example, adhesives can be used to bond dissimilar materials, adhesive joints have a high stiffness to …
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