The Experts below are selected from a list of 15930 Experts worldwide ranked by ideXlab platform
K. Ikeuchi - One of the best experts on this subject based on the ideXlab platform.
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Characterization of aluminum/steel Lap Joint by friction stir welding
Journal of Materials Engineering and Performance, 2005Co-Authors: A. Elrefaey, M. Gouda, M. Takahashi, K. IkeuchiAbstract:The welding of a Lap Joint of a commercially pure aluminum plate to a low carbon steel plate (i.e., Al plate top, and steel plate bottom) was produced by friction stir welding using various rotations and traveling speeds of the tool to investigate the effects of the welding parameters on the Joint strength. The Joint strength depended strongly on the depth of the pin tip relative to the steel surface; when the pin depth did not reach the steel surface, the Joint failed under low applied loads. Meanwhile, slight penetration of the pin tip to the steel surface significantly increased the Joint strength. The Joint strength tended to increase with rotationspeed and slightly decrease with the increase in the traveling speed, although the results were quite scattered. The effects of the welding parameters were discussed metallographically based on observations with optical and scanning electron microscopes.
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characterization of aluminum steel Lap Joint by friction stir welding
Journal of Materials Engineering and Performance, 2005Co-Authors: A. Elrefaey, M. Gouda, M. Takahashi, K. IkeuchiAbstract:The welding of a Lap Joint of a commercially pure aluminum plate to a low carbon steel plate (i.e., Al plate top, and steel plate bottom) was produced by friction stir welding using various rotations and traveling speeds of the tool to investigate the effects of the welding parameters on the Joint strength. The Joint strength depended strongly on the depth of the pin tip relative to the steel surface; when the pin depth did not reach the steel surface, the Joint failed under low applied loads. Meanwhile, slight penetration of the pin tip to the steel surface significantly increased the Joint strength. The Joint strength tended to increase with rotationspeed and slightly decrease with the increase in the traveling speed, although the results were quite scattered. The effects of the welding parameters were discussed metallographically based on observations with optical and scanning electron microscopes.
J.-y. Kim - One of the best experts on this subject based on the ideXlab platform.
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Fatigue strength in laser welding of the Lap Joint
Finite Elements in Analysis and Design, 2004Co-Authors: S.-k. Cho, Young-soo Yang, Kwang-jae Son, J.-y. KimAbstract:Finite element analysis and fatigue test are performed to estimate the fatigue strength for the laser-welded Lap Joint. Concentrating on the application of design and manufacturing technology using the laser-welded Lap Joints, the residual stress and welding direction of the laser-welded Lap Joint have to be considered in relation to its fatigue strength. After three-dimensional modeling for the longitudinal direction parallel to fatigue load and transverse direction perpendicular to that, residual stress fields in laser-welded Lap Joint are calculated using thermo-elastic-plastic finite element analysis. Then the equivalent fatigue stress with residual stress effect is obtained. In order to ensure reliability of calculated fatigue strength, fatigue test is performed. The calculated and experimental results showed good agreement. The fatigue strength in the transverse direction welding is higher than that of longitudinal direction welding.
Dai Gil Lee - One of the best experts on this subject based on the ideXlab platform.
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A study on the Lap shear strength of a co-cured single Lap Joint
Journal of Adhesion Science and Technology, 2000Co-Authors: Kum Cheol Shin, Jung Ju Lee, Dai Gil LeeAbstract:In this paper, the Lap shear strength of a co-cured single Lap Joint subjected to a tensile load was investigated by experimental analysis. Co-cured Joint specimens with several different bonding parameters such as bond length, surface roughness, and stacking sequence of the composite laminate were fabricated and tested. The dependence of the Lap shear strength of the co-cured Joint on the bonding parameters was investigated from the experimental results. The failure mechanism of the co-cured single Lap Joint was partially cohesive failure. The Lap shear strength of the co-cured single Lap Joint was significantly affected by the bond length and the stacking sequence of the composite laminate. However, the effect of surface roughness on the Lap shear strength of the co-cured single Lap Joint was not so significant.
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Development of a Fatigue Failure Model for the Adhesively Bonded Tubular Single Lap Joint under Dynamic Torsional Loading
Journal of Adhesion, 1996Co-Authors: Su Jeong Lee, Dai Gil LeeAbstract:Abstract The adhesively bonded tubular single Lap Joint shows nonlinear torque transmission capability and deformation characteristics under static torsional loading because of nonlinear properties of the adhesive. However, the dynamic or fatigue torque transmission capability can be calculated with linear, analysis because the stress-strain relation under torsional fatigue loading is linear, due to the small dynamic transmission capability compared with the static torque transmission capability. In this paper, a failure model for the adhesively bonded tubular single Lap Joint under torsional fatigue loading was developed with respect to the adhesive thickness, which is the critical factor for the static torque transmission capability. Also, a design method for the adhesively bonded tubular single Lap Joint under torsional fatigue loading was proposed.
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Optimal Design of the Adhesively-Bonded Tubular Single Lap Joint
The Journal of Adhesion, 1995Co-Authors: Su Jeong Lee, Dai Gil LeeAbstract:Abstract In this paper, a method for the optimal design of the adhesively-bonded tubular single Lap Joint was proposed based on the failure model of the adhesively-bonded tubular single Lap Joint. The failure model incorporated the nonlinear mechanical behavior of the adhesive as well as the different failure modes in which the adhesive failure mode changed from bulk shear failure, via transient failure, to interfacial failure between the adhesive and the adherend, according to the magnitudes of the residual thermal stresses induced by fabrication. The effects of the design parameters for the adhesively-bonded tubular single Lap Joint, such as the thicknesses of adhesive layer and adherends, the bonding length, and the scarfs of adherends, on the torque transmission capability and the efficiency of the adhesive Joint were investigated.
A. Elrefaey - One of the best experts on this subject based on the ideXlab platform.
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Characterization of aluminum/steel Lap Joint by friction stir welding
Journal of Materials Engineering and Performance, 2005Co-Authors: A. Elrefaey, M. Gouda, M. Takahashi, K. IkeuchiAbstract:The welding of a Lap Joint of a commercially pure aluminum plate to a low carbon steel plate (i.e., Al plate top, and steel plate bottom) was produced by friction stir welding using various rotations and traveling speeds of the tool to investigate the effects of the welding parameters on the Joint strength. The Joint strength depended strongly on the depth of the pin tip relative to the steel surface; when the pin depth did not reach the steel surface, the Joint failed under low applied loads. Meanwhile, slight penetration of the pin tip to the steel surface significantly increased the Joint strength. The Joint strength tended to increase with rotationspeed and slightly decrease with the increase in the traveling speed, although the results were quite scattered. The effects of the welding parameters were discussed metallographically based on observations with optical and scanning electron microscopes.
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characterization of aluminum steel Lap Joint by friction stir welding
Journal of Materials Engineering and Performance, 2005Co-Authors: A. Elrefaey, M. Gouda, M. Takahashi, K. IkeuchiAbstract:The welding of a Lap Joint of a commercially pure aluminum plate to a low carbon steel plate (i.e., Al plate top, and steel plate bottom) was produced by friction stir welding using various rotations and traveling speeds of the tool to investigate the effects of the welding parameters on the Joint strength. The Joint strength depended strongly on the depth of the pin tip relative to the steel surface; when the pin depth did not reach the steel surface, the Joint failed under low applied loads. Meanwhile, slight penetration of the pin tip to the steel surface significantly increased the Joint strength. The Joint strength tended to increase with rotationspeed and slightly decrease with the increase in the traveling speed, although the results were quite scattered. The effects of the welding parameters were discussed metallographically based on observations with optical and scanning electron microscopes.
S.-k. Cho - One of the best experts on this subject based on the ideXlab platform.
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Fatigue strength in laser welding of the Lap Joint
Finite Elements in Analysis and Design, 2004Co-Authors: S.-k. Cho, Young-soo Yang, Kwang-jae Son, J.-y. KimAbstract:Finite element analysis and fatigue test are performed to estimate the fatigue strength for the laser-welded Lap Joint. Concentrating on the application of design and manufacturing technology using the laser-welded Lap Joints, the residual stress and welding direction of the laser-welded Lap Joint have to be considered in relation to its fatigue strength. After three-dimensional modeling for the longitudinal direction parallel to fatigue load and transverse direction perpendicular to that, residual stress fields in laser-welded Lap Joint are calculated using thermo-elastic-plastic finite element analysis. Then the equivalent fatigue stress with residual stress effect is obtained. In order to ensure reliability of calculated fatigue strength, fatigue test is performed. The calculated and experimental results showed good agreement. The fatigue strength in the transverse direction welding is higher than that of longitudinal direction welding.
