Results 21 to 30 of about 527,814 (258)

A numerical study on thermal bonding with preheating technique for polypropylene microfluidic device

open access: yese-Polymers, 2023
This study presents a method for producing microfluidic chips from polypropylene using a pre-heated bonding area and thermal bonding technology. ANSYS was utilized to investigate the effects of bonding parameters and microchannel deformation and predict ...
Almezgagi Esam Abdulrahman   +3 more
doaj   +1 more source

The strength of a chemical bond [PDF]

open access: yesInternational Journal of Quantum Chemistry, 2021
AbstractWe discuss the physical criteria that have been proposed as a measure of the strength of a chemical bond. Critical examination of the strengths and weaknesses of the various quantities shows that the force constant is the most general measure for determining the strength of a chemical bond in molecules.
Lili Zhao   +3 more
openaire   +2 more sources

Improvement of the Mechanical Properties of the Diffusion-Bonded 2024 Aluminum Alloy through Post-Weld Heat Treatments

open access: yesMetals, 2022
In this study, 2024 aluminum alloy was diffusion bonded to identify the effect of the bonding temperature, applied pressure, and heating time on the microstructure, hardness, and bonding strength.
Meng-Ting Chiang   +5 more
doaj   +1 more source

Evaluation of Ultrasonic Bonding Strength with Optoacoustic Methods

open access: yesApplied Sciences, 2018
This study reports the application of an optoacoustic method for evaluating the bonding strength of ultrasonically bonded joints in a non-destructive and non-contact fashion.
Takumi Kamimura   +2 more
doaj   +1 more source

Effects of Mechanical and Chemical Pretreatments of Zirconia or Fiber Posts on Resin Cement Bonding.

open access: yesPLoS ONE, 2015
The bonding strength between resin cement and posts is important for post and core restorations. An important method of improving the bonding strength is the use of various surface pretreatments of the post. In this study, the surfaces of zirconia (fiber)
Rui Li   +5 more
doaj   +1 more source

Optimization of Alkali Activator on the Strength Properties of Fly Ash Based Geopolymer Repair Materials [PDF]

open access: yesArchives of Metallurgy and Materials
Flexible and rigid road pavement deteriorates over time and needs high-performance patching repair materials. Cold mix asphalt patching is an easy and inexpensive repair material to repair potholes and other damaged roads.
W.W.A. Zailani   +6 more
doaj   +1 more source

Bonding Characteristics of Macrosynthetic Fiber in Latex-Modified Fiber-Reinforced Cement Composites as a Function of Carbon Nanotube Content

open access: yesInternational Journal of Polymer Science, 2016
The effect of carbon nanotube content (0, 0.5, 1.0, 1.5, and 2.0% of the cement weight) on the bonding properties of macrosynthetic fiber in latex-modified hybrid fiber cement-based composites (LMHFRCCs) was evaluated.
Ji-Hong Jean, Chan Yu, Chan-Gi Park
doaj   +1 more source

Characterization of dentine to assess bond strength of dental composites [PDF]

open access: yes, 2015
This study was performed to develop alternating dentine adhesion models that could help in the evaluation of a self-bonding dental composite. For this purpose dentine from human and ivory was characterized chemically and microscopically before and after ...
Aljabo, A   +6 more
core   +2 more sources

Determination of the Effect of Surface Roughness on the Bonding Strength of Wooden Materials

open access: yesBioResources, 2017
The purpose of this study was to determine the effect of surface roughness on bonding strength in Oriental beech, cherry, Scots pine, and Taurus cedar woods.
Cevdet Sogutlu
doaj   +1 more source

Experimental Study on the Property and Mechanism of the Bonding Between Rubberized Concrete and Normal Concrete

open access: yesInternational Journal of Concrete Structures and Materials, 2022
Scholars have studied the impact of rubber particles (RPs) on the performance of the concrete and the research topics have covered all the mechanical properties and durability of normal concrete (NC).
Ling-Yun Feng, Ai-Jiu Chen, Han-Dong Liu
doaj   +1 more source

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