Assessment of the effect of defects on mechanical properties of adhesive bonded joints by using non destructive methods

2016 ◽  
Vol 91 ◽  
pp. 337-345 ◽  
Author(s):  
Rosanna Tamborrino ◽  
Davide Palumbo ◽  
Umberto Galietti ◽  
Patrizia Aversa ◽  
Samanta Chiozzi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bonded Joints ◽  
Adhesive Bonded Joints ◽  
Non Destructive ◽  
Destructive Methods

Adhesive Joints of Heterogeneous Materials in Protective Wares

2019 ◽  
Vol 816 ◽  
pp. 295-301
Author(s):  
Olga V. Meteleva ◽  
M. Surikova ◽  
L. Bondarenko
Keyword(s):  
Mechanical Properties ◽  
Adhesive Joint ◽  
Adhesive Joints ◽  
Film Material ◽  
Bonded Joints ◽  
Personal Protection ◽  
Adhesive Film ◽  
Experimental Estimate ◽  
Properties Of Materials ◽  
Adhesive Bonded Joints

Different materials are often combined in protective sewing goods. Multifunctional adhesive film material for adhesive joints of protective materials is created. The results of experimental estimate of adhesive joint physic-mechanical properties of materials with heterogeneous properties are represented. Adhesive-bonded joints of goods for personal protection are investigated.

scholarly journals Effect of Laser and Plasma Surface Cleaning on Mechanical Properties of Adhesive Bonded Joints

Procedia CIRP ◽  
2015 ◽  
Vol 33 ◽  
pp. 458-463 ◽  
Author(s):  
C. Mandolfino ◽  
E. Lertora ◽  
S. Genna ◽  
C. Leone ◽  
C. Gambaro
Keyword(s):  
Mechanical Properties ◽  
Surface Cleaning ◽  
Bonded Joints ◽  
Plasma Surface ◽  
Adhesive Bonded Joints

Non-Destructive Evaluation of Composite Adhesive Kissing Bond

2013 ◽  
Author(s):  
Yingtao Liu ◽  
Joel Johnston ◽  
Aditi Chattopadhyay
Keyword(s):  
Structural Integrity ◽  
Adhesive Bond ◽  
Image Correlation ◽  
Bonded Joints ◽  
Hydraulic Test ◽  
Ultrasonic Methods ◽  
Non Destructive Evaluation ◽  
Test Frame ◽  
Adhesive Bonded Joints ◽  
Non Destructive

Adhesive bonded joints have been increasingly employed in aerospace, automotive, and other mechanical systems due to the advantages of uniform stress distribution, less stress concentration, light in weight, etc. However, the early damage stage of the adhesive bond joints, which are usually named as kissing bond, can significantly impact the structural integrity and safety. Kissing bond is difficult to detect and identify using current non-destructive evaluation (NDE) techniques since there is no clearly gap or interface between the bond area. Attempts using advanced ultrasonic methods have reached limited success, but more reliable methods need to be developed before adhesive joints can be more widely applied to the engineering field. This paper focuses on the development of detection method using digital image correlation (DIC) technique. Three types of adhesive kissing bond joint samples were fabricated using different contamination recipe to simulate the kissing bonds. The performance of the fabricated joint samples were tested using uniaxial hydraulic test frame and the detection capability of DIC system was investigated. The noncontact strain field measurement method using DIC can indicate the existence of kissing bonds with limited load. The results of DIC measurement is encouraging and can be further used for the NDE estimation of mechanical properties of the kissing bond.

Effect of adhesive type on mechanical properties of galvanized steel/SMC adhesive-bonded joints

2020 ◽  
Vol 97 ◽  
pp. 102482
Author(s):  
Jingru Ni ◽  
Junying Min ◽  
Hailang Wan ◽  
Jianping Lin ◽  
Shuang Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Galvanized Steel ◽  
Bonded Joints ◽  
Adhesive Bonded Joints ◽  
Adhesive Type

scholarly journals DIAGNOSTICS OF THE PHYSICAL AND MECHANICAL PROPERTIES OF THE METAL BY THE PARAMETERS OF THE ELASTIC-PLASTIC INDENTATION OF A SPHERICAL INDENTER

2020 ◽  
pp. 58-62
Author(s):  
M. M. Matlin ◽  
V. A. Kazankin ◽  
E. N. Kazankina
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Spherical Indenter ◽  
Test Material ◽  
Tensile Stresses ◽  
Elastic Plastic ◽  
Plastic Indentation ◽  
Non Destructive ◽  
Destructive Methods

The paper describes non-destructive methods for determining the physical and mechanical properties of metals based on the regularities of elastic-plastic indentation of a spherical indenter into the test material. Using the proposed methods makes it possible to construct a diagram of true tensile stresses based on the results of a single indentation of a spherical indenter.

Potentials of the evaluation of the wood quality in living trees by using semi-and non-destructive methods in order to reduce wood-processing costs

2019 ◽  
pp. 115-126
Author(s):  
Ivana Živanović ◽  
Zoran Poduška ◽  
Ljubinko Rakonjac ◽  
Filip Jovanović
Keyword(s):  
Mechanical Properties ◽  
Wood Density ◽  
Bending Strength ◽  
Wood Quality ◽  
Renewable Resource ◽  
Relative Mass ◽  
Heterogeneous Structure ◽  
Wood Processing ◽  
Non Destructive ◽  
Destructive Methods

Being a natural, ecological and renewable resource, wood is increasingly replacing artificial and toxic materials in the manufacture of various types of packaging and other products; thus, its proper and economically justified use has become necessary. The best utilization of wood raw materials has been sought both in practice and theory, which led to the development of a number of non-destructive and semi-destructive methods for the wood quality assessments in various stages of wood exploitation. In this paper, two instruments for the inspection of the internal condition of standing trees were analyzed. The resistograph was designed for the detection of internal defects. In addition to assessing the condition of living trees of different species, the instrument is used to assess the wood density in various materials. The observed resistance during drilling is proportional to the change in the wood density or the relative mass of the element analyzed. The results of drilling in different spots or directions, through the cross-section and along the element, can be used to map the properties of the element. The fractometer is a device designed to measure the strength and other mechanical properties of on a core sample extracted by using an increment borer from a certain part of the tree or branch examined. The fractometer can determine the maximum fracture force and bending and pressure strength of wood. It is also possible to identify the stage of decay. Due to its heterogeneous structure and anisotropy, the wood compressive and bending strengths differ between different anatomical directions even within a single species. The results of previous research in the literature indicate that there is a significant positive correlation between the radial bending strength and the longitudinal compressive strength of wood. This actualizes the need for the use of different tree species in construction, depending on the load that the wood element will be exposed to. These devices provide high precision and quality in measurement and can achieve a good correlation between the measured values and the mechanical properties of wood. This way, science and practice could be provided by significant data on the properties and quality of wood, while its consumption is minimized.

Sign in / Sign up

Export Citation Format

Share Document