Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1271 for “"Durability"”.
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THE DURABILITY OF PHENOLIC ADHESIVES
… aim of thia programme was to study the superior durability claimed for phenolic-based adhesives, in hot humid conditions. The systems under study were the nitrile-phenolics AF-10 and AF-30 (3M), the vinyl-phenolic Redux 775 and the modified epoxide Redux 312 (Ciba-Geigy). The AF-30 structural …
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Investigating the durability of structures
The durability of structures is one of primary concerns in the engineering industry. Poor durability in design may result in a structure losing its performance to the extent where structural integrity is no longer satisfied and human lives are at stake. Moreover, the associated costs of maintenance …
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An estimation of concrete durability
Recent trends in concrete durability design have favored the use of protective coatings. Although these coatings, if applied correctly, can totally inhibit degradation of the concrete member, these coatings are expensive. In the most severe conditions, the coatings are the only way to avoid …
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Durability of non air entrained concrete
Frost-þíðu skemmdir í steinsteypu eru að öllum líkindum sá þáttur sem hefur hvað mest áhrif á endingu bygginga á Íslandi. Utanhússteypa á Íslandi þarf að standast kröfur um að flögnun sé ekki meiri en 1 kg/m2 samkvæmt stöðluðu sænsku frostþols prófi, SS 137244. Til að uppfylla þessar kröfur er …
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Freeze-Thaw Durability of Pervious Concrete
… on this need for additional research on the durability of pervious concrete in cold regions, the objective of this research was to evaluate the resistance of pervious concrete to degradation during freeze-thaw cycling under different soil clogging and water saturation conditions. The …
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The durability of precast concrete elements
… occasionally in contact with water pose a high durability risk. Despite this, the current specifications allow a reduction in cover to reinforcing steel for precast culverts to only 20 mm from at least 40 mm for cast-in-place culverts.
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Probabilistic analysis of turbine blade durability
The effect of variability on turbine blade durability was assessed for seven design/operating parameters in three blade designs. The parameters included gas path and cooling convective parameters, metal and coating thermal conductivity and coating thickness. The durability life was modelled as …
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Assessing the influence of crack width on the durability potential of cracked concrete using the durability index approach
Durability is a major concern for reinforced concrete (RC) structures. RC structures both in service and new, are subject to cracking. Irrespective of the cause of the cracking, cracks can increase the rate of penetration of aggressive species into concrete and modify the transport properties. …
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Transience and durability in Japanese urban space
… are expressed in terms of transience and durability within urban form. A methodology is developed to explore the changing interrelationship between six conceptual ‘entities’ – the individual, household, dwelling, establishment, premises and site. Metrics are identified for each to …
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Mundane Fashion: Women, Clothes and Emotional Durability
This research investigates emotional durability of clothing through the lens of a designer-maker practice. The current discourse on fashion futures urgently recognizes that a deeper understanding of the behavioural drivers behind long-term use of clothing is critical in order to move beyond …
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Durability analysis method for nonstationary random vibration
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Accelerated Durability Characterization of Laminated Polycarbonate Systems
… of polycarbonate. This study aims to explore the durability of laminated polycarbonate systems by investigating the interaction of environment and TPU viscoelastic behavior on the time-dependent crack growth in these laminates. The main test utilized is the wedge test, where a wedge is inserted …
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Durability and aging of dental fissure sealants
The purpose of this study was to evaluate the physical properties of dental sealant resins under aging conditions to determine the critical factors controlling functional property loss with time. The effect of processing on the chemical and thermal properties of several different sealant …
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Long Term Durability of Glass Reinforced Composites
… topics related to the performance and long-term durability of glass-reinforced composites. The first portion of this dissertation describes work to assess the effect that post-curing has on widely used E-glass/vinyl-ester composites (E-glass/Derakane 510-A and E-glass/Derakane 8084). It is shown …
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Durability and Damage Analysis of Hybrid Multiscale Composites
<p>In this dissertation, an effort was carried out to enhance the mechanical performance of fiber reinforced composites (FRPs) by modification of the fibers’ surface morphologies. The effects of various surface alterations of a plain-woven carbon fiber fabric surface, on the fiber/epoxy interface …
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Adhesive bonding of stainless steel :Sstrength and durability.
… thickness. In order to assess the environmental durability of adhesive joints, lap shear and peel tests were conducted after ageing in ambient and high humidity environments. To compliment the data, Boeing wedge crack extension tests were also carried out on adhesive bonded joints incorporating …
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Adhesive bonding of stainless steel : strength and durability
… thickness. In order to assess the environmental durability of adhesive joints, lap shear and peel tests were conducted after ageing in ambient and high humidity environments. To compliment the data, Boeing wedge crack extension tests were also carried out on adhesive bonded joints incorporating …
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Physical performance and durability evaluation of rubberized concrete
… or pre-treating procedure. Then, three types of durability test were conducted namely, 1) Chloride ion diffusion test, 2) Abrasion wear resistance test, and 3) Freezing and thawing test. Up-to-date, many successful achievements were reported by researchers around the world. However, in Asian …
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