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 63 for “"static tests"”.
-
Loading Rate Effects on Axial Pile Capacity in Clays
… efficient and reliable structures, axial load tests are performed on foundation piles. Traditionally, static tests with an average duration of approximately twenty-four hours have been performed on test piles to obtain their axial capacity. These static tests require multiple piles used as …
-
Disadvantaged students' academic performance: analysing the zone of proximal development
… act as alternatives to matriculation marks and static tests. The study relates the students' response to mediation to their academic performance and analyses the role that non-cognitive factors such as motivation, approaches to learning and learning strategies play in cognitive performance. The …
-
Impact Response and Failure of a Textile Composite Fuselage Frame
Impact tests are performed on two circular circumferential frame segments using a drop tower apparatus. These frames have a nominal radius of 120 inches, a forty-eight - degree included angle, a thin-walled cross section in the shape of the letter J, and are typical of the transverse fuselage …
-
Experiment to Study Earthquake Response of R/c Structures With Stiffness Interruptions
… Experimental work includes earthquake simulation tests of four small-scale, reinforced concrete structures and static tests of small-scale members and member assemblies which were representative of elements composing the test structures. Analytical work includes evaluation of several simple linear …
-
Aerodynamic stability of oscillating bridges
… in a fluid stream of uniform velocity. From static tests and pressure distribution examinations predictions of vertical and torsional stability trends have been made and approximate aerodynamic constants evaluated. Observations of the change in energy required to maintain uniform oscillations …
-
Time- and Temperature-Dependence of Fracture Energies Attributed to Copper/Epoxy Bonds
… 90° peel test has been widely employed in quasi-static fracture testing of film adhesion for printed circuit board applications, this test was first used as a basis to which other test results could be compared. A test fixture was designed and built for quasi-static peel testing that accommodated …
-
Experimental investigation of the response of reinforced concrete structural walls subjected to static and dynamic loading
… to study the potential discrepancies between static and dynamic wall response, to examine the influence of the web reinforcement ratio on the overall response and modes of failure, and to investigate the sensitivity of shear-dominated wall response to the sequence of earthquake testing. The …
-
Dynamic hardness testing challenges conventional tests
… begins with a description of the more common static hardness tests and the usefulness of such tests in industry. It shows a correlation between the different types of hardness and also between hardness and other material parameters such as tensile strength. A thorough investigation of the …
-
Establishing scale inhibitor retention mechanisms in pure adsorption and coupled adsorption/precipitation treatments
… experimental techniques systematically from static to dynamic tests, as follows; 1. Static Adsorption/Compatibility Experiments – these experiments were conducted on two phosphonate scale inhibitors; namely DETPMP (a penta-phosphonate) and OMTHP (an hexa-phosphonate) using sand, kaolinite and …
-
An Experimental Investigation of Ejector Ramjet Performance at Static Conditions
… the Atlantis Intake System (AIS) was tested at static conditions. For static tests with no forward velocity, the AIS ERJ successfully entrained and mixed the stagnant surrounding air to create a stoichiometric mixture of 17.2 when the Mach 2 primary jet’s total pressure was 625 ± 25 kPa. …
-
Mechanics of Notched Izod impact testing of polycarbonate
… Polycarbonate specimens, as well as of a quasi-static version of Notched Izod bending. The thin specimens were found to yield in a ductile manner followed by tearing across most of the ligament width, resulting in a final failure including a small plastically-deformed ligament hinging the two …
-
Aerodynamic stability of bridges
… could be determined. With data from these tests engineers can determine beforehand whether the sections, if used, will be safe against uplifting, sliding, overturning, and of building up oscillations of catastrophic proportions. The second part of this thesis is devoted to the determination …
-
Optimal stacking sequence design of stiffened composite panels with cutouts
… continuous optimization based design procedures. Tests on optimal baseline designs were carried out in parallel with the analytical study to investigate the buckling and failure characteristics of stiffened quasi-static compression loaded panels with holes and to assess the validity of analytical …
-
Seismic Assessment of RC Structures Considering Vertical Ground Motion
In the experimental investigation, two SPSD tests were conducted in order to experimentally investigate the effect of vertical ground motion. FHWA Bridge systems selected from the previously completed analysis was used during full hybrid simulations designed to realistically represent the loading …
-
Flexural behavior of a glass fiber reinforced wood fiber composite
The static and dynamic flexural properties of a wood fiber matrix internally reinforced with continuous glass fibers were investigated. When modelled as a sandwich composite, the static flexural modulus of elasticity (MOE) of glass fiber reinforced hardboard could be successfully predicted from the …
-
Static and free-vibrational response of semi-circular graphite- epoxy frames with thin-walled open sections
… were conducted to measure the three-dimensional static and free vibrational response of two graphite-epoxy, thin-walled, open section frames. The frames are semi-circular with a radius of three feet, and one specimen has an I cross section and the other has a channel cross section. The …
-
Computation of a Damping Matrix for Finite Element Model Updating
… because damping can not be determined via static tests as can mass and stiffness. Furthermore, damping is more difficult to determine from dynamic measurements than natural frequency. However, damping is extremely important in formulating predictive models of structures. In addition, …
-
Large deformation dynamic bending of composite beams
… the failure of the beams were of interest. The static response of the beams was also studied in order to determine the difference between the static and dynamic failure. Twelve different laminate types were tested. The beams tested were 23 in. by 2 in. and generally 30 plies thick. The beams …
-
Effect of Corrosion on the Behavior of Reinforced Concrete Beams Subject to Blast Loading
… Research Facility and the other half under quasi-static loading. The blast tests were conducted to investigate how increasing blast pressure and impulse affect the global displacement response and damage modes of beams subjected to blast loads. The quasi-static tests were performed to establish …
-
Modular track panels for improved safety in the mining transportation industry
… open joint. One FRP panel was also tested. Tests on the panels included static and dynamic loading at discrete locations to determine the response of the beams in a simulated mine foundation. Static tests of the modular panels included both vertical and horizontal loading. Fatigue tests were …
Page 1 of 4