Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userStudying and Improvement of Strength in Adhesive Joints
دراسة متانة وصلات اللصق و تحسنيها
1276
0 6
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
يهدف البحث إلى دراسة متانة وصلات اللصق التراكبية البسيطة، لصفائح الألمنيوم المطبقة كثيرا في التطبيقات الهندسية، و تم التحقق من تأثير كل من مسافة التداخل، و قيم الخشونة السطحية للسطوح الملصقة على متانة القص للوصلات المنجزة، حُضّرت الوصلات الملصقة باستخدام نوعين من المواد اللاصقة، و هما الايبوكسي و الأكريليك و نُفذت الاختبارات التجريبية تحت تأثير حمل الشد حتى الكسر باستخدام آلة الشد. أظهرت النتائج إمكانية زيادة متانة الوصلات الملصقة بزيادة طول التداخل، و زيادة قيم الخشونة السطحية للسطوح الملصقة و حدد لاصق الأكريليك بأنه اللاصق الأمثل في الاختبارات المنفذة، و ذلك تبعا لنمط الفشل الحاصل في العينات المختبرة، و التي لم تتعرض فيها منطقة اللصق للانهيار مع زيادة الحمولة المطبقة.
The aim of this study is to determine strength of adhesive single-lap joints of Aluminum alloys which are widely used in geometric applications. It was investigated to define the influence of overlap length and surface roughness value on shear strength of achieved adhesive joints. It was used Epoxy and Acrylic adhesives to prepare adhesive joints and all the specimens were subjected to axial tensile tests and the results are presented as a comparison. Results of those tests showed that shear strength increased with increasing each of overlap length and surface roughness of adherends and Acrelicadhesiveproduced4better results according to failure mode of tested samples.
References used
DA SILVA, L. F.; DILLARD, D. A.; BLACKMAN, B.; ADAMS, R. D. Testing adhesive joints. John Wiley & Sons. 2012 Oct 22, 1- 468
ASGHARIFAR, M.; KONG, F.; CARLSON, B.; KOVACEVIC, R. An Experimental and Numerical Study of Effect of Textured Surface by Arc Discharge on Strength of Adhesively Bonded Joints. Journal of Mechanics Engineering and Automation. 2, 2012, 229-242
KWON, J.W.; LEE, D. G. The effects of surface roughness and bond thickness on the fatigue life of adhesively bonded tubular single lap joints. Adhesion Sci. Technol. Vol. 14(8), 2000, 1085–1102
rate research
Read More
research The aim of this is to find an explicit relationship between the strength of fibers, bundle and
yarns. The CV values of the strength are given as well. This provides a relatively simple method for
estimation of staple yarn strength, while a
voiding some difficulties of an empirical method. The effects of
important factors such as fiber length and thickness, twist and count of yarn are considered. The results
are verified by published data in Mechanical Engineering of Textile Industries and Their Technologies,
Faculty of Mechanical and Electrical Engineering, Damascus University. and also in Al-Kumasiah
company in Damascus city.
This research provides suggestions if we apply it it will help in estimating directly the yarn strength
without manufacturing and suitable testing of the yarn.
the scientific researches go
towards applying practical and scientific experiments to achieve these goals.
From this point, we try in our research to create strength and increase it for
ceramic tiles at phases with lower temperature degree than what is used in
industry.
Recently, the importance of high Strength concrete has appeared due to its
application in manufacturing most of the concrete structures and members, as well as to its
importance in the implementation of civilian facilities like bridge bases, skyscr
apers and in
implementing the columns and platforms which carry oil installations carried out in the
oceans and seas. The research aims to design concrete mixtures with cylindrical resistors
( 55- 65- 75 Mpa) according to the American code AcI-211-4R-93 by using local and
appropriate additions as well as explaining the method used in designing. Then, studying
the transformation in stress strain curve – deformation
(σ- ζ ) undergoing a simple pressure on the previous samples throughout the
available devices. Then, it was compared to the charts obtained mathematically .Law
behaviour of stress strain and deformation curve was rated, in addition to modulus of
elasticity taken from the chart.
Couple of results and recommendations related to the issue were concluded, those
which were applied in praxis.
New resin systems( di-methacrylates) were developed to improve the
mechanical and physical properties of provivinal to investigate mechanical srength(edge- strength,
diametrical tensile strength) and polymrrization(degree of conversion) of three newdi-methacrylates
provisionals, and one of mono-methacrylate.
The purpose of this study was to evaluate the shear and tensile bond strengths of orthodontic
brackets bonded with self etching primer and resin-reinforced glass ionomer cement in comparison with
light cured resin adhesive.
The tested self-etching
primer and adhesive systems produced bond strength values higher than that of the light cured resin
adhesive whereas the resin-reinforced glass ionomer cement showed a significantly reduced bond strength
. Clinically, the use of self-etching primer and adhesive systems is suitable for orthodontic bracket
bonding.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
