Fem Analysis and Comparison of Single Fiber Pull-Out Tests

investigation of single-user and multi-user detection methods in mc-cdma systems and comparison of their performances

در این پایان نامه به بررسی روش های آشکارسازی در سیستم های mc-cdma می پردازیم. با توجه به ماهیت آشکارسازی در این سیستم ها، تکنیک های آشکارسازی را می توان به دو دسته ی اصلی تقسیم نمود: آشکارسازی سیگنال ارسالی یک کاربر مطلوب بدون در نظر گرفتن اطلاعاتی در مورد سایر کاربران تداخل کننده که از آن ها به عنوان آشکارساز های تک کاربره یاد می شود و همچنین آشکارسازی سیگنال ارسالی همه ی کاربران فعال موجود در...

Fracture Mechanics of the Microbond and Pull-out Tests

The properties of the fiber/matrix interface in composites have an influence on their overall performance. Common methods for studying the interface are micromechanical tests that load a single fiber/matrix interface to failure. Two popular tests are the microbond test [1] and the single-fiber, pull-out test [2]. In a microbond test a droplet of matrix is sheared off the fiber by pulling the fi...

A Computer Simulation of Single Fiber Pull Out Process in a Composite

A stochastic approach, the Ising model combined with Monte Carlo simulation, is employed to study the process of a fiber debonding and being pulled out from a fiber reinforced composite. The complicated mechanisms involved can be realistically simulated more than ever with a simple algorithm that is applicable to such phenomena as partial debonding, fiber breaking and matrix yielding, all of wh...

Analysis of Bond Strength by Pull Out Test on Fiber Glass Posts Cemented in Different Lengths

BACKGROUND The aim of this study was to evaluate, by means of pull-out test, the bond strength of fiberglass posts when cemented with different lengths in endodontically treated teeth. MATERIALS AND METHODS Sixty single-rooted bovine roots were cut in the cementoenamel junction with 21 mm length. They were endodontically treated and randomly divided into three groups (n = 20). Group 1 - Prepa...

Theoretical and Experimental Investigation into the Adhesion between Fiber-Reinforced Bitumen and Aggregates by Using Pull-out Method