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 “"Joint Stiffness"”.
-
Measurement of sacroiliac joint stiffness with Doppler imaging of vibrations – A reliability study
Introduction: Sacroiliac joint (SIJ) motion dysfunction and its role in low back and pelvic pain remains an unresolved issue amongst the medical fraternity. Clinical objective SIJ motion and pain detection methods are both expensive and difficult to reproduce whilst most manual methods of SIJ …
-
Predicting the Joint Stiffness of Wooden Pallets Assembled with Lag Screws and Carriage Bolts
… by many different researchers; however, the stiffness values associated with pallet joints have not. The goal of this work was to investigate the stiffnesses associated with pallets joints made with lag screws and carriage bolts. It is important to understand that different materials, …
-
Elucidating the Relationships Between Spider Size, Joint Stiffness, and the Mechanical Frequency Response of the Body
… the biomechanics of spiders, at the level of leg joints and the whole body. To study joints, I quantified the allometry of leg joint stiffness in spiders. I found that the stiffness of spider joints increased nearly isometrically with increasing body mass, partly by having shorter and thicker leg …
-
Neural and Collagen Tissue Properties As They Relate to Glenohumeral Joint Laxity and Stiffness
… or a traumatic event that leads to excessive joint laxity. A major concern with instability is the high recurrence rate post treatment. Although the occurrence and recurrence of instability are primarily associated with capsule and labrum injury, the tissue characteristics of the capsule and …
-
Adaptive gait strategies of healthy individuals walking with a novel bi-linear stiffness ankle-foot orthosis
… providing support and stability about the ankle joint. Passive-dynamic AFOs (PD-AFOs) are broadly designed with a foot plate, a cuff that wraps around the shank, and a strut connecting the foot plate and cuff. A PD-AFO’s strut is the primary contributor to its stiffness properties, which can be …
-
Nonlinear axial stiffness characteristics of axisymmetric bolted joints
… of the current design theory for bolted joints which is based on a linear, one-dimensional stiffness analysis is presented. A detailed nonlinear finite element analysis of a bolted joint conforming to ANSI standards was performed. The finite element results arc presented in the classical …
-
The assessment of fatigue-related changes in stride mechanics, variability and long-range correlations in recreational and elite distance runners using foot-mounted inertial sensors
… the impact of a fatiguing drop jump protocol on joint stiffness, stride mechanics and measures of variability. As before, a group of elite and recreational distance runners were recruited for this experiment. It was found that joint stiffness was significantly reduced after the fatiguing jumps. …
-
An investigation of an existing aluminum lattice dome under snow loads
… The dome was modeled as a space frame with the joint member stiffness range from pinned-end to four times the member stiffness. The internal forces in the pinned-end and framed-end models were compared to the specifications by the Aluminum Association. The pinned-end model under the unbalanced …
-
Self-efficacy expectations and functional ability in everyday activities in clients undergoing total knee arthroplasty
… Educational activities included: attending a joint replacement class and a physical therapy session, performing exercises, and reading educational materials. Other sources of client information were also discussed. Self efficacy was assessed regarding confidence in ability to perform …
-
Finger joint impedance control applications to investigate spasticity
… of the human body, a better understanding of how joint impedance control operates in healthy individuals is necessary. In this investigation, a second order rotary torque model was implemented to investigate the impedances at the metacarpophalangeal (MCP) joint of the index finger. The model was …
-
Analysis of Metal Plate Connected Wood Truss Assemblies under Out-of-Plane Loads
… under out-of-plane loads. The rotational stiffness of truss-wall connections, and truss bracing elements are included in the structural component model. Previous experimental data of fall arrest anchor loading were used for model validation. A parametric study considering loading location, …
-
Structural modelling of adhesive joints in automotive bodies
The behaviour of a vehicle is dependent on the stiffness of the joints between the sheet components in the body shell. Although spot-welding is the predominant joining method for the construction of steel bodies in the automotive industry, other alternatives are now being considered. Adhesive …
-
Assessment of spastic patients before and after selective posterior lumbar rhizotomy
… resistance to passive movement, degree of joint stiffness, ability to initiate and inhibit voluntary movement, and the degree of abnormal function in the developmental positions (rolling, sitting, kneeling, crawling, standing and walking) were graded on rating scales. Analyses of gait and …
-
Apoios em dente de vigas de concreto leve armado e protendido
Tests on twenty half-joints (tooth-shaped end of a beam) of ten ligthtweight concrete beams were carried out. Five were reinforced concrete beams and five prestressed concrete beams. Five different joint reinforcement details were tested. The joints were reinforced so that reinforcement yielding …
-
Investigation of the feasibility of using focal vibratory stimulation with robotic aided therapy for spasticity rehabilitation in spinal cord injury
… abnormally increased muscle tone and connected joint stiffness that interfere with residual volitional control of the limbs. Treatments for spasticity include many pharmacological and non-pharmacological techniques, however many of them have severe sideeffects. Evidence suggest the use of …
-
Engineering a robotic exoskeleton for space suit simulation
… inexpensive but do not accurately simulate the joint stiffness inherent to space suits, a key factor impacting extravehicular activity performance. The MIT Man-Vehicle Laboratory and Aurora Flight Sciences designed and built an actively controlled exoskeleton for space suit simulation called the …
-
Studies of wood pallet response to forced vibration
… model was used to investigate the effects of joint stiffness, deckboard EI, and uniformly distributed load level on the resonant response of pallet decks. Pallets were found to lower unit-load resonant frequencies and increase transmissibilities at resonance. Pallet sections constructed with …
-
The biomechanical and neuromuscular responses to shoe-surface instability
… IM wearers by improving the level of functional joint variability. The second study assessed if the varied instability of IM would be more de-stabilising than an unstable shoe (US) by comparing joint stability strategies during walking and running. Results revealed joint stiffness reorganisations …
-
Measurement of Wood Pallet Performance Subjected to Uniform Loading in Racked, Fork Tine, and Floor Stacked Support Conditions
… pallet designs and support conditions on pallet stiffness. Uniform loads were applied to pallet designs containing thick or thin components and three, four, or five non-notched and notched stringers. The pallets were supported using racked across the length, racked across the width, fork truck …
Page 1 of 3