Failure behaviour of composite T-joints with novel metallic arrow-pin reinforcement

2014 ◽  
Vol 110 ◽  
pp. 16-28 ◽  
Author(s):  
S. Heimbs ◽  
A.C. Nogueira ◽  
E. Hombergsmeier ◽  
M. May ◽  
J. Wolfrum
Keyword(s):  
T Joints ◽  
Failure Behaviour ◽  
Pin Reinforcement

Study on Tensile Mechanical Behavior of Composite T-Joints

2017 ◽  
Vol 1142 ◽  
pp. 146-151
Author(s):  
Zhi Lin Liu ◽  
Pu Rong Jia ◽  
Tao Peng ◽  
Zheng Lan Yao
Keyword(s):  
Tensile Strength ◽  
Composite Laminates ◽  
Failure Process ◽  
Load Condition ◽  
Maximum Load ◽  
Displacement Curve ◽  
Test Results ◽  
Reinforcement Effect ◽  
T Joints ◽  
Pin Reinforcement

Based on three kinds of composite T-joints with different connection way for tension test outside the plane, it was obtained contrastively that how the ordinary adhesive, Z-pin reinforcement and stitching reinforcement three different fitting influence tensile strength, damage failure process and failure mode of composite T-joints. The test results showed that compared with ordinary adhesive connection mode, tensile strength of the Z-pin reinforcement and stitching reinforcement T-joints increased by 13.6% and 11.4%, respectively; and the largest deformation increased by 19.2% and 15.1%, respectively. After reaching maximum load condition, the ordinary adhesive T-joints had brittle failures, but Z-pin reinforcement and stitching reinforcement T-joints all showed that the ductile damage behavior, corresponding to the load-displacement curve appeared saw-tooth wave platform. Obviously, the Z-pin reinforcement T-joints had the most significant reinforcement effect on tensile properties of composite laminates T-joints.

Defects and tensile properties of 6013 aluminum alloy T-joints by friction stir welding

2014 ◽  
Vol 57 ◽  
pp. 146-155 ◽  
Author(s):  
Yong Zhao ◽  
Lilong Zhou ◽  
Qingzhao Wang ◽  
Keng Yan ◽  
Jiasheng Zou
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Tensile Properties ◽  
T Joints ◽  
Friction Stir

Failure behaviour of cladding made from Sv 07Kh25N13 austenitic stainless steel

2021 ◽  
Vol 189 ◽  
pp. 104275
Author(s):  
J. Štefan ◽  
J. Siegl ◽  
J. Adámek ◽  
R. Kopřiva ◽  
M. Kytka
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Failure Behaviour

scholarly journals Stress Concentration Factors for Welded Plate T-Joints Subjected to Tensile, Bending and Shearing Loads

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 546
Author(s):  
Krzysztof L. Molski ◽  
Piotr Tarasiuk
Keyword(s):  
Stress Concentration ◽  
Plate Thickness ◽  
Percentage Error ◽  
Geometrical Parameters ◽  
T Joints ◽  
Loading Mode ◽  
Weld Toe ◽  
Concentration Factors ◽  
Parametric Expression ◽  
Stress Concentration Factors

The paper deals with the problem of stress concentration at the weld toe of a plate T-joint subjected to axial, bending, and shearing loading modes. Theoretical stress concentration factors were obtained from numerical simulations using the finite element method for several thousand geometrical cases, where five of the most important geometrical parameters of the joint were considered to be independent variables. For each loading mode—axial, bending, and shearing—highly accurate closed form parametric expression has been derived with a maximum percentage error lower than 2% with respect to the numerical values. Validity of each approximating formula covers the range of dimensional proportions of welded plate T-joints used in engineering applications. Two limiting cases are also included in the solutions—when the weld toe radius tends to zero and the main plate thickness becomes infinite.

scholarly journals Nondestructive testing of composite T-Joints by TNDT and other methods

2020 ◽  
pp. 107012
Author(s):  
Vladimir Vavilov ◽  
Arsenii Chulkov ◽  
Stanislav Dubinskii ◽  
Douglas Burleigh ◽  
Victor Shpilnoi ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
T Joints

scholarly journals Effect of Stirring Pin Rotation Speed on Microstructure and Mechanical Properties of 2A14-T4 Alloy T-Joints Produced by Stationary Shoulder Friction Stir Welding

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1938
Author(s):  
Haifeng Yang ◽  
Hongyun Zhao ◽  
Xinxin Xu ◽  
Li Zhou ◽  
Huihui Zhao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Friction Stir Welding ◽  
Rotation Speed ◽  
Weld Nugget ◽  
Al Alloy ◽  
Nugget Zone ◽  
T Joints ◽  
Friction Stir ◽  
Stationary Shoulder ◽  
Microstructure And Mechanical Properties

In this study, 2A14-T4 Al-alloy T-joints were prepared via stationary shoulder friction stir welding (SSFSW) technology where the stirring pin’s rotation speed was set as different values. In combination with the numerical simulation results, the macro-forming, microstructure, and mechanical properties of the joints under different welding conditions were analyzed. The results show that the thermal cycle curves in the SSFSW process are featured by a steep climb and slow decreasing variation trends. As the stirring pin’s rotation speed increased, the grooves on the weld surface became more obvious. The base and rib plates exhibit W- or N-shaped hardness distribution patterns. The hardness of the weld nugget zone (WNZ) was high but was lower than that of the base material. The second weld’s annealing effect contributed to the precipitation and coarsening of the precipitated phase in the first weld nugget zone (WNZ1). The hardness of the heat affect zone (HAZ) in the vicinity of the thermo-mechanically affected zone (TMAZ) dropped to the minimum. As the stirring pin's rotation speed increased, the tensile strengths of the base and rib plates first increased and then dropped. The base and rib plates exhibited ductile and brittle/ductile fracture patterns, respectively.

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