scholarly journals STRESS DISTRIBUTION IN THE ADHESIVE JOINT OF A "SANDWICH" SPECIMEN

2020 ◽  
Author(s):  
A. Jasińska ◽  
B. Ligaj
Keyword(s):  
Stress Distribution ◽  
Adhesive Joint ◽  
Sandwich Specimen

Temperature Limits for Asphalt Coated Flowlines: A Design Approach

2004 ◽  
Author(s):  
Bjo̸rn Melve
Keyword(s):  
Shear Stress ◽  
Stress Distribution ◽  
Shear Modulus ◽  
Adhesive Joint ◽  
Temperature Limit ◽  
Internal Temperature ◽  
The North ◽  
Material Stiffness ◽  
The North Sea ◽  
Concrete Coating

The 18” flowline from the Mikkel template in the North Sea was coated with asphalt enamel for corrosion protection and an external concrete coating for weight. The high internal temperature of 85 °C close to the template can give relative thermal movements between the outer concrete coating and the inner steel pipe. The case is considered to be similar to an adhesive joint between two tubular members. The strength approach is based on the analysis of the shear stress distribution in this “adhesive” joint. The material stiffness (shear modulus) of the asphalt was used to determine the upper temperature limit for the asphalt coating. The hotter part of the flowline had to be coated with polypropylene instead of asphalt.

Numerical Analysis of Shear Stress on Adhesive Joint between FRP and Steel Structure in Civil Engineering

2012 ◽  
Vol 568 ◽  
pp. 216-221
Author(s):  
Shu Kuan Zhang ◽  
Pei Yan Huang ◽  
Hao Zhou ◽  
Chuan Yu Zhao
Keyword(s):  
Shear Stress ◽  
Stress Distribution ◽  
Adhesive Joint ◽  
Civil Engineering ◽  
Great Influence ◽  
Steel Structure ◽  
High Strength ◽  
Shear Stress Distribution ◽  
Shear Stresses ◽  
Accurate Analysis

Fiber reinforced polymer (FRP) is widely applied in the concrete and steel structure reinforcement field because of its high strength and convenient constructability in civil engineering. The adhesive joint is the weakness of the reinforced structure, but with the complicated stress distribution for analytic method. Numerical method provides the best solution to the further analysis. In this paper, a finite element method (FEM) of double lap joint model was established with ANSYS to investigate the shear stress in the adhesive joint of the reinforced structure, the shear stresses were analyzed in detail in both length and thickness direction in civil engineering. The results show that, 1) the FEM calculation results of shear stress of adhesive and the theoretical calculation values are consistent within the main part of the adhesive; 2) FEM is the effective method to further study the shear stress distribution of the adhesive, meshing size has great influence on the results of calculation; 3) to obtain more accurate analysis of shear stress distribution, the non-linear characteristics of the adhesive should be considered

Newly Designed Adhesive Joint for Torque Loaded Tube

2011 ◽  
Vol 462-463 ◽  
pp. 7-12
Author(s):  
Jamiatul Akmal ◽  
Ign Wiratmaja Puja ◽  
Satryo S. Brodjonegoro ◽  
Rochim Suratman ◽  
I. Wayan Suweca
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Adhesive Joint ◽  
Parameter Study ◽  
Literature Study ◽  
Composite Tube ◽  
Gfrp Composite ◽  
New Type

Adhesive joint is commonly applied to CFRP/GFRP composite tube, however, its failure rate is still high and this will limit the use of composite tube for industrial purpose. The literature study showed that the stress distribution at the joint, when loaded, is not evenly distributed and creates stress concentration at the edges. Attempts have been made by researchers to improve the joint design so that the stress would be more evenly distributed and minimize stress concentration, however, the improvement has been very limited. In this work, a comprehensive parameter study has been performed to observe the properties of adhesive joint of torque loaded tube. Based on the observation, a new type of adhesive joint is proposed which successfully reduces the stress concentration along the joint during torque loading. The analysis was performed using finite element method.

Stress Distribution and Strength of T-type Adhesive Joint with Reinforcement for Bending Moment

1987 ◽  
Vol 21 (3-4) ◽  
pp. 195-209 ◽  
Author(s):  
Yukisaburo Yamaguchi ◽  
Susumu Amano ◽  
Sadao Sato
Keyword(s):  
Stress Distribution ◽  
Adhesive Joint ◽  
Bending Moment

Stress Distribution in the Cantilevered Single-Lap Adhesive Joint

2011 ◽  
Vol 179-180 ◽  
pp. 936-939 ◽  
Author(s):  
Xiao Cong He
Keyword(s):  
Spatial Distribution ◽  
Stress Distribution ◽  
Adhesive Joint ◽  
Stress Component ◽  
Tensile Loading ◽  
Maximum Value ◽  
Accurate Indication ◽  
3D Fea ◽  
Adhesive Thickness ◽  
Actual Stress

The aim of this paper is to investigate the effect of bending on the actual stress distribution of a cantilevered single-lap adhesive joint under tension using the 3D FEA method. Five layers of elements were used across the adhesive thickness in order to obtain an accurate indication of the variation of stresses. All the numerical results obtained from the FEA show that the spatial distribution of all components of stress are similar for different interfaces though the stress values are obviously different. The results also show that the maximum value of the stress component S33 is higher than the maximum value of the stress component S11 which would have been expected to be the most dominant since the joint is subjected to tensile loading. The reason for this behaviour is the effect of bending at the bonded section of the joint.

The concerted use of SEM, TEM, and SCM for examination of resin-dentin interfaces

1994 ◽  
Vol 52 ◽  
pp. 476-477
Author(s):  
B. Van Meerbeek ◽  
L. J. Conn ◽  
E. S. Duke
Keyword(s):  
Surface Layer ◽  
Stress Distribution ◽  
Phosphoric Acid ◽  
Bonding Mechanism ◽  
Restorative Dentistry ◽  
Dental Adhesive ◽  
Low Viscosity ◽  
Dentin Adhesives ◽  
Acid Etch ◽  
Tooth Tissue

Restoration of decayed teeth with tooth-colored materials that can be bonded to tooth tissue has been a highly desirable property in restorative dentistry for many years. Advantages of such an adhesive restorative technique over conventional techniques using non-adhesive metal-based restoratives include improved restoration retention with minimal sacrifice of sound tooth tissue for retention purposes, superior adaptation and sealing of the restoration margins in prevention of caries recurrence, improved stress distribution across the tooth-restoration interface throughout the whole tooth, and even reinforcement of weakened tooth structures. The dental adhesive technology is rapidly changing. An efficient resin bond to enamel has already long been achieved. Its bonding mechanism has been fully elucidated and has proven to be a durable and reliable clinical treatment. However, bonding to dentin represents a greater challenge. After the failures of a dentin acid-etch technique in imitation of the enamel phosphoric-acid-etch technique and a bonding procedure based on chemical adhesion, modern dentin adhesives are currently believed to bond to dentin by a micromechanical hybridization process. This process is developed by an initial demineralization of the dentin surface layer with acid etchants exposing a collagen fibril arrangement with interfibrillar microporosities that subsequently become impregnated by low-viscosity monomers. Although the development of such a hybridization process has well been documented in the literature, questions remain with respect to parameters of-primary importance to adhesive efficacy.

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