Title of Document: DEVELOPMENT OF SINGLE-MOLECULE FORCE AND TORQUE MEASUREMENT WITH APPLICATION TO NUCLEOSOME DISRUPTION. Jen-Chien Chang, Doctor of Philosophy, 2014 Directed By: Assistant Professor Arthur La Porta, Department of Physics Single-molecule force spectroscopy is a powerful method in biophysical research. The ability of detecting and manipulating single molecule finds applications i...

In the interest of providing more effective evaluations of impact wrench vibration exposures and the development of improved methods for measuring vibration emissions produced by these tools, this study focused on three variables: acceleration measured at the tool surface, vibration exposure duration per test trial, and the amount of torque required to unseat the nuts following a test trial. Fo...

BACKGROUND Owing to the complexity and magnitude of functional forces transferred to the bone-implant interface, the mechanical strength of the interface is of great importance. The purpose of this study was to determine the intraosseous torsional shear strength of an osseointegrated oral implant using 3-D finite element (FE) stress analysis implemented by in vivo failure torque data of an impl...

This paper addresses the issue of difficulties in servicing brake pipe connectors for passenger cars, service life which exceeds 8‒10 years, is associated with deteriorated loosening connectors. The existing ways to loosen pipes have been investigated, especially those whose dismantling complicated due corrosion and contamination mated surfaces as a result their wetting when driving car. A conv...

Joint friction is a major problem in accurately controlling manipulators performing small precise tasks. Previously developed solutions to this problem require the use of either complex and unreliable models of the joint friction or expensive and delicate internal joint torque sensors. Here a simple, cost-effective method for compensating the effect of joint friction is proposed. It uses a six-...

PURPOSE In vitro data were collected to measure torque-force values of an internal distraction device. The measurements were correlated with in vivo torque readings in an attempt to better understand the force required to distract the osteogenic bone callus of the human mandible during distraction osteogenesis. METHODS AND MATERIALS Five internal craniofacial distraction devices were mounted ...

This study investigates improvement of torsional strength special wrench for K-series self-propelled howitzer power-pack maintenance. In order to maintain the power-pack, is one essential tools assembling/disassemblimg engine and transmission. However, failures(plastic deformation, fracture phenomenon etc.) have been frequently reported even though was used within recommended standard torque ra...