W. James Renton

Bio: W. James Renton is an academic researcher from University of Delaware. The author has contributed to research in topics: Lap joint & Stress concentration. The author has an hindex of 4, co-authored 4 publications receiving 216 citations.

The Efficient Design of Adhesive Bonded Joints

Abstract: A concise method of analysis is used to study the numerous parameters influencing the stress distribution within the adhesive of a single lap joint. The formulation includes transverse shear and normal strain deformations. Both isotropic or anisotropic material systems of similar or dissimilar adherends are analysed. Results indicate that the primary Young's modulus of the adherend, the overlap length, and the adhesive's material properties are the parameters most influential in optimizing the design of a single lap joint.

The Analysis and Design of Anisotropic Bonded Joints.

Abstract: : Extensive research was conducted providing analysis methods and design methodology for bonded joints in structures of laminated composite materials under static and fatigue loads. An analytical closed form solution has been developed for stresses and deformations in the adhesive joint and the adherends, including transverse shear deformations and normal strain, adherend anisotrophy, thermal strains and adhesive properties. A digital program provides rapid design and analysis; an inclusive parameter study provides trends and methodology.

The Analysis and Design of Composite Material Bonded Joints.

Abstract: : Recent experiments have shown that significant improvements can be made in the structural efficiency of single lap joints through several modifications Tests have been conducted in which the adherends were linearly tapered from full panel thickness to practically zero thickness over the length of the bondline in the load direction Further, tests were conducted to examine the effects of introducing small grooves on the adhesive side of the adherends, perpendicular to the load direction Similarly, grooves only over the thicker half of the tapered adherend were investigated, because these grooves do introduce stress concentrations In each case, significant improvements in joint efficiency were made under either static or fatigue loadings Additionally, specific observations are made pertaining to the residual strain effect due to joint fabrication on the fatigue life of strain effect due to joint fabrication on the fatigue life of the joint Second, studies were made on the effects of using hybrid adherends and their effect on joint efficiency

Adhesively bonded joints in composite materials: An overview

Abstract: A review of the investigations that have been made on adhesively bonded joints of fibre-reinforced plastic (FRP) composite structures (single skin and sandwich construction) is presented. The effects of surface preparation, joint configuration, adhesive properties, and environmental factors on the joint behaviour are described briefly for adhesively bonded FRP composite structures. The analytical and numerical methods of stress analysis required before failure prediction are discussed. The numerical approaches cover both linear and non-linear models. Several methods that have been used to predict failure in bonded joints are described. There is no general agreement about the method that should be used to predict failure since the failure strength and modes are different according to the various bonding methods and parameters, but progressive damage models are quite promising since important aspects of the joint behaviour can be modelled by using this approach. However, a lack of reliable failure criteria ...