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.
Results
Showing 1 to 20 of 44 for “"Fastening"”.
-
Dynamic ergonomic analysis and simulation of fastening operation
<p>"Operator performing fastening operation with powered hand-tools at awkward postures is subjected to external forces that may pose a risk of developing ergonomic injuries. For design of safe workplaces and selection of tools it is necessary to identify the probable causes of discomfort by …
-
Aerospace automated drilling and fastening technology product selection framework
… produce equipment to automate the drilling and fastening of aerospace structures. These two units each come with vast product portfolios, and distinct approaches to address customer needs. This thesis focuses on an efficient method of evaluating how Ascent's current products align with …
-
Field test program of the concrete crosstie and fastening system
… performance of concrete crossties and elastic fastening systems must be upgraded. As a part of a study aimed at improving concrete crossties and fastening systems, field experimentation was performed at the Transportation Technology Center (TTC) in Pueblo, CO by researchers from the University …
-
Railroad track fastening system demands and response: Implications for mechanistic design
The student, Marcus Dersch, submitted this Dissertation for approval on 2022-04-20 at 09:13.
-
Capacity analysis and throughput increase of an automated robotic fastening system
… is in the midst of implementing a new robotic fastening system that has been designed with flexibility as a key feature. This thesis describes work done build a model of the new system in order to estimate the capacity of the system. It then presents several recommendations to increase the …
-
Design, Validation, and Clinical Testing of a Novel Fastening Device for a Scoliosis Brace
… down. The overall goals were to develop a novel fastening device, or controlled tension unit (CTU), for a scoliosis brace that allowed the user to set the strap tension to the prescribed value as determined by the orthotist at the time of brace fitting and to maintain the prescribed strap tension …
-
Mechanistic analysis of concrete crosstie and fastening system using field-validated finite element model
… the performance of concrete crosstie and fastening system under vertical and lateral wheel load using finite element analysis, and explore possible improvement for current track design standard. The damage of fastening system is one of the most prevalent failure causes for concrete …
-
Determination of load path through concrete crosstie and fastening system: a laboratory and field investigation
… In this research, the behavior of crosstie and fastening system is investigated through material-level, component-level and system-level laboratory and field experiments. The system-level experiments use three primary test setups. One of these setups, referred to as a static single-crosstie and …
-
Understanding the vertical load path under static and dynamic loads in concrete crosstie and fastening systems
… design approach for the crossties and fastening systems. It is important to follow the flow of forces through the system to understand the demands on each individual component. In spite of extensive research focusing on the vertical load path a lack of clear understanding of the loads …
-
Application of a design-for-remanufacture framework to the selection of product life-cycle fastening and joining methods
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
-
Force and effort analysis of unfastening actions in disassembly processes
Fastening is the process of connecting one or more parts together with the aid of fastening elements. Unfastening, the reverse of fastening, is the process of separating components from each other by removing or detaching fastening elements. So far, the unfastening process is not well understood, …
-
Finite element analysis of railway track under vehicle dynamic impact and longitudinal loads
… of longitudinal restraint of existing rail fastening system and its dependency on track parameters affects the future design of rail fastening system. This thesis focuses on investigating numerically these two problems using finite element (FE) method. An FE model with multiple crossties and …
-
Multifaceted approach for the analysis of rail pad assembly response
… worldwide, advancements in concrete crosstie fastening systems are required. A mechanistic design approach based on scientific principles, derived from extensive laboratory and field investigation and combined with computational analyses, has the potential to improve the current …
-
Interaction of stainless steel threaded fasteners with stainless steel locking inserts
… limited use (if any) of lubrication for threaded fastening systems, galling between the threaded fastener and the locking insert was determined to be the major concern. Galling occurs at the highly loaded thread interface of the components and is attributed to the adhesive and sliding wear …
-
The evolution and evaluation of an interactive engineering design teaching tool : MIT's EDICS
… subjects that were studied were: transmissions, fastening and joining techniques, and engineering drawing and drafting. The results of this evaluation show that in the subjects of transmissions and fastening and joining, students who used EDICS to study performed significantly better than those …
-
The calculation of noise from railway bridges and viaducts
Pandrol Rail Fastenings Limited are a designer and manufacturer of railway rail-fastening systems. As an organisation they have the capability to reduce the noise impact of bridges using resilient track components. They also have a commercial interest in providing such technology. Knowledge of the …
-
Quantification of rail seat load distributions on concrete crossties
… study aimed at improving concrete crossties and fastening systems, researchers at UIUC are attempting to characterize the loading environment at the rail seat using matrix-based tactile surface sensors (MBTSS). This instrumentation technology has been implemented in experimentation utilizing both …
-
Evaluation of improved stevedore pallet
… four nails, instead of three, were used for fastening the leading-edge deckboards and three nai Is, instead of two, were used for fastening the inner deckboards to each stringer. The sequence of tests on each pallet started with the initial stiffness test, followed by the rigidity test, the …
-
Efficiency studies with different types of dairy barn equipment and barn arrangements
… silage (2) Feeding hay (3) Feeding grain e. Fastening and unfastening cows in stalls f. Location of milker vacuum lines 2. Efficiency of different types of stalls a. Amount of bedding require b. Cleanliness of cows c. Feed wastage d. Comfort of cows e. Production
-
Analysis of a bonded joint using bulk adhesive properties
… as a viable alternative to conventional fastening methods. In order to gain wider acceptance, it is essential to address the issue of the mechanical characterization of adhesive materials and its implementation in the design of bonded joints. While measuring the in-situ properties of the …
Page 1 of 3