scholarly journals Evaluation of Interfacial Strength of Brittle Coating Films by Tensile Test.

1995 ◽  
Vol 44 (498) ◽  
pp. 321-326 ◽  
Author(s):  
Keijiro NAKASA ◽  
Soichiro TAKATA ◽  
Hirozo ICHIGO
Keyword(s):  
Tensile Test ◽  
Interfacial Strength ◽  
Coating Films ◽  
Brittle Coating

Microscale tensile test of galvannealed steel/aluminum dissimilar joint for estimation of intrinsic interfacial strength

2020 ◽  
Vol 186 ◽  
pp. 196-201
Author(s):  
Tomoki Matsuda ◽  
Tomokazu Sano ◽  
Masanao Munekane ◽  
Mitsuru Ohata ◽  
Akio Hirose
Keyword(s):  
Tensile Test ◽  
Interfacial Strength ◽  
Dissimilar Joint ◽  
Galvannealed Steel

scholarly journals Evaluation of Fiber/Matrix Interfacial Strength of Neutron Irradiated SiC/SiC Composites Using Hysteresis Loop Analysis of Tensile Test

2006 ◽  
Vol 47 (1) ◽  
pp. 207-210 ◽  
Author(s):  
Kazumi Ozawa ◽  
Tatsuya Hinoki ◽  
Takashi Nozawa ◽  
Yutai Katoh ◽  
Yuichi Maki ◽  
...  
Keyword(s):  
Tensile Test ◽  
Hysteresis Loop ◽  
Interfacial Strength ◽  
Loop Analysis ◽  
Fiber Matrix ◽  
Sic Composites

Evaluation of the Interfacial Strength of Layered Structures by Indentation Method

2008 ◽  
Vol 75 (3) ◽  
Author(s):  
Masaki Omiya ◽  
Kikuo Kishimoto ◽  
Takashi Nakano
Keyword(s):  
Evaluation Method ◽  
Cohesive Zone Model ◽  
Interfacial Strength ◽  
Layered Structures ◽  
Indentation Load ◽  
Zone Model ◽  
Coating Film ◽  
Coating Films ◽  
Indentation Tests ◽  
Depth Curve

The delamination of thin coating films from substrates is a critical issue for the reliability of micro- and nanoelectronic devices. Indentation methods have the potential to measure interfacial strength in micro- and nanofilm thickness coating films. In this paper, indentation tests of layered structures are simulated using the damage-based cohesive zone model. When the delamination initiates, the indentation load and depth curve tend to deviate from the indentation load and depth curve for the perfectly bonded case. When the interface is stiffer than the coating film, a brittlelike delamination occurs on the interface; when the stiffness of the interface is smaller than that of the coating layer, a ductilelike delamination occurs on the interface. The ratio of shear moduli, μint∕μPI, characterizes the delamination behavior on the interface during indentation tests. Focusing on the discontinuous point during the indentation tests and introducing the balance of energy before and after the onset of delamination, the evaluation method of the interfacial strength is proposed. The proposed method can be used to estimate the interfacial strength when the ratio of hardness and the yield stress of the coating film is 3.5<HA∕σy<4.5.

A method for measuring the in-plane compressive strength and the compression behavior of coating layers

TAPPI Journal ◽  
2011 ◽  
Vol 10 (7) ◽  
pp. 29-34
Author(s):  
TEEMU PUHAKKA ◽  
ISKO KAJANTO ◽  
NINA PYKÄLÄINEN
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Calcium Carbonate ◽  
Coating Layer ◽  
Test Methods ◽  
Coating Films ◽  
Precipitated Calcium Carbonate ◽  
Coating Color ◽  
Mineral Coatings ◽  
Styrene Butadiene

Cracking at the fold is a quality defect sometimes observed in coated paper and board. Although tensile and compressive stresses occur during folding, test methods to measure the compressive strength of a coating have not been available. Our objective was to develop a method to measure the compressive strength of a coating layer and to investigate how different mineral coatings behave under compression. We used the short-span compressive strength test (SCT) to measure the in-plane compressive strength of a free coating layer. Unsupported free coating films were prepared for the measurements. Results indicate that the SCT method was suitable for measuring the in-plane compressive strength of a coating layer. Coating color formulations containing different kaolin and calcium carbonate minerals were used to study the effect of pigment particles’ shape on the compressive and tensile strengths of coatings. Latices having two different glass transition temperatures were used. Results showed that pigment particle shape influenced the strength of a coating layer. Platy clay gave better strength than spherical or needle-shaped carbonate pigments. Compressive and tensile strength decreased as a function of the amount of calcium carbonate in the coating color, particularly with precipitated calcium carbonate. We also assessed the influence of styrene-butadiene binder on the compressive strength of the coating layer, which increased with the binder level. The compressive strength of the coating layer was about three times the tensile strength.

Tensile test of sintered Si3N4 and the influence of process defects such as pores on fracture strength.

1989 ◽  
Vol 38 (424) ◽  
pp. 32-38 ◽  
Author(s):  
Hidehiro KISHIMOTO ◽  
Akira UENO ◽  
Hiroshi KAWAMOTO ◽  
Sachio URA
Keyword(s):  
Tensile Test ◽  
Fracture Strength
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