James H. McElhaney

Journal Article J Biomech · March 1996 This study explores the inertial effects of the head and torso on cervical spine dynamics with the specific goal of determining whether the head mass can provide a constraining cervical spine end condition. The hypothesis was tested using a low friction im ... Full text Link to item Cite

Axial strain measurements in skeletal muscle at various strain rates.

Journal Article Journal of biomechanical engineering · August 1995 A noncontact optical system using high speed image analysis to measure local tissue deformations and axial strains along skeletal muscle is described. The spatial resolution of the system was 20 pixels/cm and the accuracy was +/- 0.125 mm. In order to mini ... Full text Cite

Finite-element analysis of balloon angioplasty.

Journal Article Medical & biological engineering & computing · July 1994 Finite-element modelling is used to simulate the response of atherosclerotic arteries to a balloon angioplasty procedure. Material properties for the normal wall are derived from experimental data, and the properties of the plaque are varied over a wide ra ... Full text Cite

Quasi-linear modeling of the viscoelastic responses of the human cervical spine in torsion

Journal Article American Society of Mechanical Engineers, Bioengineering Division (Publication) BED · December 1, 1991 The dynamic torsional responses of the human cadaver cervical spine were measured in vitro. The quasi-linear formulation of time dependent behavior was used to describe these structural responses. The resulting model showed high predictive ability, reachin ... Cite

A piece-wise non-linear elastic stress expression of human and pig coronary arteries tested in vitro.

Journal Article Journal of biomechanics · January 1991 Eight human and nineteen pig unembalmed proximal left anterior descending and circumflex coronary arteries were subjected to linear volume changes (2 s ramp time) at three fixed axial extensions while immersed in a physiological saline bath at body tempera ... Full text Cite

Influence of end condition on human cervical spine injury mechanisms

Journal Article SAE (Society of Automotive Engineers) Transactions · 1991 The passive combined flexion and axial loading responses of the unembalmed human cervical spine were measured in a dynamic test environment. The influence of end condition (the degree of constraint imposed on the head by the contact surface) was varied to ... Cite

The viscoelastic responses of the human cervical spine in torsion: experimental limitations of quasi-linear theory, and a method for reducing these effects.

Journal Article Journal of biomechanics · January 1991 The dynamic torsional viscoelastic responses of the human cadaver cervical spine were measured in vitro. The quasi-linear formulation of time dependent behavior was used to describe and predict the resultant torque as a function of applied angular deflecti ... Full text Cite

Experimental limitations of quasi-linear theory, and a method for reducing these effects

Journal Article American Society of Mechanical Engineers, Bioengineering Division (Publication) BED · December 1, 1990 The quasi-linear model has been applied to predict the in vitro responses of the human cervical spine in torsion. This model was developed by approximating a true relaxation test with a finite rate ramp and hold. The performance of this model was good, rea ... Cite

Effects of ankle taping on the motion and loading pattern of the foot for walking subjects.

Journal Article J Orthop Res · 1988 Gait analysis was used to compare the ground reaction forces, ankle and foot rotations in the sagittal plane, and the center of pressure pattern beneath the right feet of seven normal subjects walking barefoot, with and without their right ankles taped in ... Full text Link to item Cite

Technical note--auditory feedback of knee angle for amputees.

Journal Article Prosthetics and orthotics international · August 1982 Full text Cite

Effects of high-intensity 60 Hz fields of bone growth

Journal Article J. Bioelectr. (USA) · 1982 As part of an ongoing investigation of physiologic effects of high-voltage power frequency electric fields, femora from 55 adult rats which had been conceived, born, and raised in an 80 kV/m, 60 Hz unperturbed field were excised and studied. Specimens from ... Cite

Parameters of stimulation and perception in an artificial sensory feedback system.

Journal Article Journal of bioengineering · August 1977 The relationships between stimulus parameters and perceptions in a prosthetic feedback system were measured using psychophysical methods. Electrical stimulation of the median nerve produced a monotonic relation between frequency of stimulation and the perc ... Cite

MECHANICAL IMPEDANCE RESPONSE OF PROTOTYPE AND PRODUCTION ANTHROPOMORPHIC DUMMY HEADS.

Journal Article American Society of Mechanical Engineers (Paper) · 1973 A study was conducted to determine the mechanical impedance characteristics of a number of developmental dummy heads and to compare these data to existing mechanical impedance data for human cadaver heads. Five dummy heads were tested. Each head was mounte ... Cite

RAREFACTION OF LIQUIDS IN A SPHERICAL SHELL DUE TO LOCAL RADIAL LOADS WITH APPLICATION TO BRAIN DAMAGE.

Journal Article Journal of Biomechanics · 1972 An experimental study is conducted to investigate the rarefaction of untreated liquids in a spherical glass container due to a local, radial ultrasonic disturbance of sinusoidal, square pulse, or impulsive nature. Water and dilute polymer solution are used ... Full text Link to item Cite

ENVIRONMENTAL PROGRESS IN SCIENCE AND EDUCATION.

Journal Article Institutet for Verkstadsteknisk Forskning, IVF Resultat · 1972 Following is the continuation of the list of titles and authors: Brain Injury Model for Crash Helmet Design. By James H. McElhaney, Verne L. Roberts and Richard L. Stalnaker. New Method of Measuring the Mechanical Impedance of Men or Dummies. By Geoff Rowl ... Cite

Some viscoelastic properties of scalp, brain, and dura

Journal Article American Society of Mechanical Engineers, Papers · 1969 Series of creep and relaxation experiments on scalp, brain, and dura from both human and monkey; analysis of practical creep loading with rise time is given; empirical expression for observed creep curves is developed and deviations from classical viscoela ... Cite

Analysis and design of streamlined heart-valve prosthesis

Journal Article American Society of Mechanical Engineers -- Papers · 1966 Discussion of equations governing flow of blood through heart-valve prosthesis and rational design of streamlined valve; pulsatile flow, non-Newtonian aspects of blood, and entrance conditions are examined; concept of boundary layer is used to generate som ... Cite

Dynamic response of biological materials

Journal Article American Society of Mechanical Engineers -- Papers · 1965 Study of impacts of varying velocity on mechanical response of human bone, bovine bone, and bovine muscle tissue; load-time and displacement-time records for these materials, as well as for nylon and aluminum, were measured over wide range of strain rates; ... Cite