Mechanics of the JKR (Johnson-Kendall-Roberts) adhesion test

2014 ◽  
pp. 307-336
Keyword(s):  
Adhesion Test

Modified Edge Lift-Off Test: Experimental Modifications for Multifilm Systems

1999 ◽  
Vol 594 ◽  
Author(s):  
J. C. Hay ◽  
E. G. Liniger ◽  
X-H Liu
Keyword(s):  
Energy Release Rate ◽  
Energy Release ◽  
Release Rate ◽  
Strain Energy ◽  
Plate Bending ◽  
Adhesion Test ◽  
Testing Method ◽  
Rate Calculation ◽  
Lift Off ◽  
Microelectronics Fabrication

AbstractIn developing an adhesion test for a microelectronics fabrication facility there are many criteria which must be met. Some of these include (i) sample prep must be simple, (ii) deformations should be elastic so the problem can be easily modeled, (iii) mechanics are ideally analytical, and (iv) the test end-point must be unambiguous and easy to obtain. A testing method in the literature which meets many of these criteria is the modified edge liftoff test (MELT). Delamination is induced through the release of strain energy stored in an elastic superlayer which results from a large mismatch in CTE between the film and substrate. In this work we consider details of the energy release rate calculation, effects of plate bending, and initial flaw size.

Medium Density Particleboard with Addition of Impregnated Paper

2014 ◽  
Vol 1025-1026 ◽  
pp. 543-546
Author(s):  
Juliana Cortez Barbosa ◽  
Anderson Luiz da Silva Michelon ◽  
Elen Aparecida Martines Morales ◽  
Cristiane Inácio de Campos ◽  
André Luis Christoforo ◽  
...  
Keyword(s):  
Moisture Content ◽  
Modulus Of Elasticity ◽  
Mechanical Tests ◽  
Modulus Of Rupture ◽  
Medium Density ◽  
Test Results ◽  
Thickness Swelling ◽  
Adhesion Test ◽  
Layer Medium ◽  
Determine Moisture Content

The aim of this research was to produce three-layer Medium Density Particleboard (MDP), with the addition of impregnated paper, in the inner layer, in proportions of 1; 5 and 20%. In this study, MDP was composed with particles of small size in outer layers, and larger particles in internal layer. After panel manufacturing, physical and mechanical tests based on Brazilian Code ABNT NBR 14.810 were carried out to determine moisture content; density; thickness swelling; water absorption; modulus of rupture (MOR) and modulus of elasticity (MOE) in static bending and internal adhesion. Test results were compared to commercial panels, produced with 100% Eucalyptus, considering the requirements specified by Brazilian Code. Properties presented values close to normative specifications, indicating positively the possibility of production of MDP using addition of waste paper impregnated.

Ceramic coating chemically vapour deposited on high speed steel substrates: Scratch adhesion test phenomena

1993 ◽  
Vol 20 (5) ◽  
pp. 352-356 ◽  
Author(s):  
Z. Naeem ◽  
A. B. Smith ◽  
M. Lamsehchi ◽  
G. W. Critchlow
Keyword(s):  
High Speed ◽  
Ceramic Coating ◽  
High Speed Steel ◽  
Adhesion Test ◽  
Steel Substrates

Scratch indentation, a simple adhesion test method for thin films on polymeric supports

1994 ◽  
Vol 8 (6) ◽  
pp. 635-650 ◽  
Author(s):  
George D. Vaughn ◽  
Bruce G. Frushour ◽  
William C. Dale
Keyword(s):  
Thin Films ◽  
Test Method ◽  
Adhesion Test ◽  
Polymeric Supports

scholarly journals Screening the ability of natural feed ingredients to interfere with the adherence of enterotoxigenicEscherichia coli(ETEC) K88 to the porcine intestinal mucus

2013 ◽  
Vol 111 (4) ◽  
pp. 633-642 ◽  
Author(s):  
Gemma González-Ortiz ◽  
José Francisco Pérez ◽  
Rafael Gustavo Hermes ◽  
Francesc Molist ◽  
Rufino Jiménez-Díaz ◽  
...  
Keyword(s):  
Adhesion Test ◽  
Weaned Piglets ◽  
Adhesive Properties ◽  
Feed Ingredients ◽  
Recognition Process ◽  
Intestinal Mucus ◽  
Novel Approach ◽  
Carbohydrate Components ◽  
Water Extractable

The inhibition of the attachment of bacteria to the intestine by receptor analogues could be a novel approach to prevent enterotoxigenicEscherichia coli(ETEC) K88-induced diarrhoea in piglets. The objective of the present study was to screen the ability of different feed ingredients (FI) to bind to ETEC K88 (adhesion test, AT) and to block its attachment to the porcine intestinal mucus (blocking test, BT) usingin vitromicrotitration-based models. In the AT, wheat bran (WB), casein glycomacropeptide (CGMP) and exopolysaccharides exhibited the highest adhesion to ETEC K88 (P< 0·001). In the BT, WB, CGMP and locust bean (LB) reduced the number of ETEC K88 attached to the intestinal mucus (P< 0·001). For WB and LB, fractionation based on their carbohydrate components was subsequently carried out, and each fraction was evaluated individually. None of the WB fractions reduced the adhesion of ETEC K88 to the mucus as did the original extract, suggesting that a protein or glycoprotein could be involved in the recognition process. With regard to the LB fractions, the water-extractable material reduced the adhesion of ETEC K88 (P< 0·001) to the mucus similar to the original extract (P< 0·001), indicating, in this case, that galactomannans or phenolic compounds could be responsible for the recognition process. In conclusion, among the FI screened, the soluble extracts obtained from WB, LB and CGMP exhibited the highest anti-adhesive properties against ETEC K88 in the BT. These results suggest that they may be good candidates to be included in diets of weaned piglets for the prevention of ETEC K88-induced diarrhoea.

scholarly journals Weibull Analysis Applied to the Pull Adhesion Test and Fracture of a Metal-Ceramic Interface

1994 ◽  
Vol 37 (2) ◽  
pp. 299-304 ◽  
Author(s):  
R. A. Erck ◽  
F. A. Nichols ◽  
D. L. Schult
Keyword(s):  
Weibull Analysis ◽  
Adhesion Test ◽  
Metal Ceramic

scholarly journals Coral-like silicone nanofilament coatings with extremely low ice adhesion

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Davide Bottone ◽  
Valentina Donadei ◽  
Henna Niemelä ◽  
Heli Koivuluoto ◽  
Stefan Seeger
Keyword(s):  
Energy Efficient ◽  
Efficient Solution ◽  
Water Repellent ◽  
Cold Environment ◽  
Adhesion Test ◽  
Porous Surfaces ◽  
Water Wettability ◽  
The Stability ◽  
Effect Of Surface ◽  
Ice Adhesion

AbstractPassive icephobic surfaces can provide a cost and energy efficient solution to many icing problems that are currently handled with expensive active strategies. Water-repellent surface treatments are promising candidates for this goal, but commonly studied systems, such as superhydrophobic surfaces and Slippery Liquid Infused Porous Surfaces (SLIPS), still face challenges in the stability and durability of their properties in icing environments. In this work, environmental icing conditions are simulated using an Icing Wind Tunnel, and ice adhesion is evaluated with a Centrifugal Adhesion Test. We show that superhydrophobic coral-like Silicone Nanofilament (SNF) coatings exhibit extremely low ice adhesion, to the point of spontaneous ice detachment, and good durability against successive icing cycles. Moreover, SNFs-based SLIPS show stably low ice adhesion for the whole duration of the icing test. Stability of surface properties in a cold environment is further investigated with water wettability at sub-zero surface temperature, highlighting the effect of surface chemistry on superhydrophobicity under icing conditions.

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