scholarly journals The assessment of modified block samples for the investigation of impact strength of adhesive joints

2019 ◽  
Vol 43 ◽  
pp. 41-47
Author(s):  
Andrzej Komorek ◽  
Jan Godzimirski ◽  
Maciej Grzywa
Keyword(s):  
Impact Strength ◽  
Adhesive Joints ◽  
Modified Block ◽  
Strength Of Adhesive Joints

606 Impact Strength of Adhesive Joints under High Temperature

2000 ◽  
Vol 2000.8 (0) ◽  
pp. 191-192
Author(s):  
Koichiro KIHARA ◽  
Shu AKABANE ◽  
Hiroaki ISONO ◽  
Toshio SUGIBAYASHI
Keyword(s):  
High Temperature ◽  
Impact Strength ◽  
Adhesive Joints ◽  
Strength Of Adhesive Joints

A Study on Evaluation of Impact Strength of Adhesive Joints Subjected to Impact Shear Loadings

2008 ◽  
Author(s):  
Toshiyuki Sawa ◽  
Toshimasa Nagai ◽  
Takeshi Iwamoto ◽  
Hideaki Kuramoto
Keyword(s):  
Impact Strength ◽  
Adhesive Joint ◽  
Static Loading ◽  
Split Hopkinson Pressure Bar ◽  
Shear Loading ◽  
Adhesive Joints ◽  
Stress Distributions ◽  
Adhesive Thickness ◽  
The Impact ◽  
Strength Of Adhesive Joints

Adhesive joints in mechanical structures are subjected to static loading as well as impact loading. It is desired for the adhesive joints to have sufficient strength under both static and impact loadings. A lot of studies on the adhesive joints and the joint strength subjected to static loading have been carried out and examined. A few research works on the adhesive joint subjected to dynamic loading have been done, however, it has not fully elucidated for applying the joints to important sections in mechanical structures. In this study, the impact strength of adhesive joints subjected to impact shear loading is investigated using modified split Hopkinson pressure bar (SHPB) apparatus. The shear strength of adhesive joint, in which a solid cylinder is bonded to a hollow cylinder by an adhesive, is determined from maximum applied shear stress. A commercial thermosetting epoxy adhesive is used in the experiments. At the same time, the stress distributions in the joints subjected to impact shear loading are simulated by the finite-element analyses (FEA). The effect of adhesive thickness is investigated experimentally and computationally. It is shown that the strength is greatly affected by the adhesive thickness and the effect on the stress distributions in the joint is discussed.

scholarly journals Numerical Analysis of Impact Loading of Adhesive Joints

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Andrzej Komorek ◽  
Jan Godzimirski ◽  
Agata Pietras
Keyword(s):  
Impact Strength ◽  
Shear Test ◽  
Adhesive Joints ◽  
Normal Stresses ◽  
Principal Stresses ◽  
Numerical Investigations ◽  
Block Shear ◽  
Bonded Joint ◽  
Numerical Research ◽  
Strength Of Adhesive Joints

Due to small repeatability of results of impact strength of adhesive joints, particularly those performed on different test machines, the authors were inspired to conduct experimental and numerical research in this field. The investigation used the Block Shear Test. The authors compared impact strength of samples which were loaded in a normative and nonnormative manner and also the dependence in impact strength with regard to the distance between the impactor’s edge and the surface of the bonded joint. The numerical calculations were carried out in the program Ansys, using the Explicit Dynamics module. The authors proposed a way of modelling the impactor of the pendulum hammer. It was found that a change in the direction of applying the load to the sample and rotating the loaded sample piece in relation to the edge of the impactor results in a significant change in the Max Principal Stresses. Numerical investigations show that lower values of Max Principal Stresses occur in joints which are characterized by larger impact strength, determined experimentally. It was also noted that moving away the edge of the impactor from the surface of the adhesive joint increases normal stresses perpendicular to the surface of the joint.

Effect of Adhesive Flaws on the Strength of Adhesive Joints

2013 ◽  
Author(s):  
Yi Hua ◽  
Linxia Gu
Keyword(s):  
Finite Element Method ◽  
Integral Method ◽  
Turbine Blades ◽  
Adhesive Joints ◽  
Crack Initiation And Propagation ◽  
Intensity Factors ◽  
Wind Turbine Blades ◽  
Initiation And Propagation ◽  
Surface Flaws ◽  
Strength Of Adhesive Joints

The influence of interior and surface flaws in Z-shaped adhesive joints of carbon/epoxy wind turbine blades is examined using finite element method. Contour integral method is used for evaluating the stress intensity factors at the flaw tips, while the strength of the joint is assessed through the crack initiation and propagation simulation. The effect of adhesive shear modulus has also been investigated.

scholarly journals The Influence of the Joint Thickness Upon the Impact Strength of Block Adhesive Joints

2018 ◽  
Vol 35 ◽  
pp. 80-89
Author(s):  
Andrzej Komorek ◽  
Jan Godzimirski ◽  
Wojciech Kucharczyk
Keyword(s):  
Impact Strength ◽  
Adhesive Joints ◽  
Joint Thickness ◽  
The Impact

Review on techniques to improve the strength of adhesive joints with composite adherends

2019 ◽  
Vol 177 ◽  
pp. 107363 ◽  
Author(s):  
X. Shang ◽  
E.A.S. Marques ◽  
J.J.M. Machado ◽  
R.J.C. Carbas ◽  
D. Jiang ◽  
...  
Keyword(s):  
Adhesive Joints ◽  
Strength Of Adhesive Joints
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