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English
Medicine & Public Health
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Chapter
Conference Paper
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Chapter and Conference Paper
The Mode of Action and Clinical Uses of the Thiouracil Group of Drugs
The association of endemic goitre with depressed function of the thyroid gland has long been known. The idea that in such cases the goitre might represent an attempt at overcoming the hypothyroid state has bee...
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Chapter and Conference Paper
A New Technique for Measuring Reactions at Quartz and other Surfaces
It is clear that the surface properties of substances which in the form of dusts cause lung diseases play an exceedingly important role in the development of these diseases. Much work is therefore in progress ...
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Chapter and Conference Paper
The Autonomic Ground Plexus in the Connective Tissues of the Human Nipple
Short descriptions of the sympathetic ground plexus have already been given in the wider study of the innervation of the human nipple (Cathcart, Gairns and Garven, 1948), in the statement accompanying a demonstra...
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Chapter and Conference Paper
Structure and Function of the Peripheral Autonomic Nervous System
“Different conceptions of the structure of the ultimate peripheral extension of the autonomic nervous system still exist, and the old problem as to whether the innervation is by individual nerve fibres, as in ...
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Chapter and Conference Paper
Fatigue of steels at constant strain amplitude and elevated temperature
From an engineering point of view fatigue at elevated temperatures is of importance under two rather different conditions. One involves vibration stresses or other high frequency stresses generally superimpose...
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Chapter and Conference Paper
Effect of geometric size on notch fatigue
It has been known for about 25 years that the stress concentration produced by a notch on a fatigue specimen is less severe than predicted by the theory of elasticity. It has also been known for a long time th...
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Chapter and Conference Paper
Some investigations on cumulative damage
Life estimates for aircraft structural components, which are subjected to repeated loads of varying amplitudes and frequencies, must be based on some cumulative damage hypothesis. Such a hypothesis enables the...
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Chapter and Conference Paper
Theories relating to fatigue of materials under combinations of stress
Analysis of available data suggests that the phenomenon of fatigue of materials results primarily from alternating shearing stress producing cracks along shear planes, and that the resistance to fatigue fractu...
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Chapter and Conference Paper
Experimental design and methods of analysis used in studying effects of metallurgical variation on fatigue
The Fatigue Section of the Metallurgy (General) Divisional Laboratory of BISRA was established at Sheffield in September 1952, but the laboratory did not commence full operation until December 1953 when the wo...
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Chapter and Conference Paper
Physical and statistical aspects of cumulative damage
The problem of prediction of the fatigue life under repeated stresscycles of varying amplitude, generally referred to as the problem of “ cumulative damage”, can be approached either from the point of view of ...
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Chapter and Conference Paper
A proposed mechanism of fatigue failure
Some years ago the author suggested the possibility of a phenomenon which, if it exists at all, would explain the formation of fatigue cracks [16]. In this paper the proposed mechanism will be described and compa...
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Chapter and Conference Paper
Basic aspects of fatigue
It is convenient to think of a specimen under repeated stresses as undergoing a progressive, accumulating damage. This concept has been applied to the total fatigue process with more or less success, in some c...
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Chapter and Conference Paper
New statistical methods applied to the analysis of fatigue data
The analysis of fatigue data is liable to serious uncertainty owing to the fact that the random dispersion of results, as already well known, attains a relatively great magnitude, as compared with values of te...
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Chapter and Conference Paper
Bending fatigue of large welded test pieces with regard to velocity of crack propagation
The present series of experiments forms part of the investigations constantly being untertaken by Burmeister & Wain with a view to increasing the safety of diesel engines [1]. In this case the main object was to ...
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Chapter and Conference Paper
Torsion and tension relations for slip and fatigue
A plot of ratios of torsion and bending fatigue limits for ductile materials is shown [1] in fig. 1, and it is seen that the results are in better agreement with the Mises criterion [2] than with the maximum shea...
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Chapter and Conference Paper
Variability in fatigue testing: Sources and effect on notch sensitivity
The information obtained from fatigue tests is obscured by the variability of the results. A knowledge of the sources of the variability is helpful in minimizing this difficulty. Once the variability has been ...
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Chapter and Conference Paper
Some observations on the propagation of fatigue cracks
The current researches on crack propagation in Materials Division of MERL mainly arose from two short fatigue determinations which formed a very small Dart of a Darjer [1] by the author and a colleague. It was sh...
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Chapter and Conference Paper
A guide to statistical methods for use in fatigue testing
In this talk I will describe a manual which is being prepared by a Task Force in the ASTM Committee E-9 on Fatigue. The purpose of this manual is to provide an outline of step-by-step procedures for using stat...
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Chapter and Conference Paper
Effect of simultaneous cyclic variation of stress and temperature on a high temperature material
For the purpose of showing experimentally, by laboratory tests, if a certain high temperature material is suitable for turbine blades in gas turbine engines, it has so far been customary to adopt creep tests a...
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Chapter and Conference Paper
A contribution to the theory of the fatigue of metals
Research into the causes of the fatigue of metals has been going on continously for many years now. However, neither X-ray analysis [1], [2], [3] nor microscopic study of the structural changes that take place du...
