The Jointing of Materials by Welding

1936 ◽  
Vol 40 (310) ◽  
pp. 647-662
Author(s):  
R. H. Dobson ◽  
R. F. Taylor
Keyword(s):  
Structural Steel ◽  
Aircraft Industry ◽  
Steel Work

This is a subject which during recent years has aroused considerable interest in all industries and particularly in the aircraft industry and a large amount of investigation work has been carried out. In some industries, both light and heavy, the growth of welding as a “ production tool ” has been phenomenal, and the same growth is at the present time occurring in the structural steel work and shipbuilding industries. If one views this change which is taking place it will be observed that the change is entirely at the expense of riveting and bolting, and before proceeding I will roughly summarise the general disadvantages of these two processes.

Stability of Axially Loaded Continuous Beams

1955 ◽  
Vol 59 (540) ◽  
pp. 848-849 ◽  
Author(s):  
A. Bolton ◽  
J. B. B. Owen
Keyword(s):  
Structural Steel ◽  
Axial Load ◽  
Structural Theory ◽  
Aircraft Industry ◽  
Continuous Beam ◽  
Steel Work ◽  
Continuous Beams ◽  
Axially Loaded ◽  
The Stability

From Mr. A. M. Dobson's Note (July 1955 Journal, page 506) which dealt with the stability of an axially loaded continuous beam, and other contacts we have had with the Aircraft Industry, it would appear that the very considerable developments of structural theory which have taken place in relation to continuous beams subjected to axial load, as employed in normal structural steel work, are not well known in aircraft stress offices. The list of references appended may then be found helpful.

Sanders & Forster: Structural Steel Work

1986 ◽  
pp. 295-296
Author(s):  
Luke Georghiou ◽  
J. Stanley Metcalfe ◽  
Michael Gibbons ◽  
Tim Ray ◽  
Janet Evans
Keyword(s):  
Structural Steel ◽  
Steel Work

III.—The Torsional Vibration of Beams of Commercial Section

1916 ◽  
Vol 36 (1-2) ◽  
pp. 32-43 ◽  
Author(s):  
Ernest G. Ritchie
Keyword(s):  
Structural Steel ◽  
Elastic Body ◽  
Torsional Vibration ◽  
Transverse Vibration ◽  
Modulus Of Elasticity ◽  
Applied Force ◽  
The Other ◽  
Elastic Theory ◽  
Steel Work ◽  
Other Hand

When an elastic body is constrained in any manner whatsoever, it is susceptible to vibration, by virtue of its elasticity, when disturbed from its position of equilibrium by an externally applied force. The period and amplitude of such vibration are dependent upon the mass and inertia of the system, the rigidity of the constraints, and upon the nature of thedisturbing force.When a beam of commercial section is loaded centrally, and subjected to vibrations, the frequency of transverse vibration can be readily determined from a knowledge of the dimensions of the beam, its modulus of elasticity, and the conditions of loading. On the other hand, where the loading is eccentric, the transverse vibration is accompanied by a torsional vibration the frequency of which is very much lower than is indicated by the ordinary elastic theory, due to the inefficiency in torsion of beam sections other than circular. In practice it is not always possible to eliminate the eccentric loading of beams, as for instancewhere power is transmitted through countershafts supported from structural steel-work, and it is with the problem of the torsional vibration of such eccentrically loaded beams that itis proposed here to deal.

Controlling Corrosion In Coal-Chemical Plants★

CORROSION ◽  
1958 ◽  
Vol 14 (4) ◽  
pp. 37-40 ◽  
Author(s):  
C. P. LARRABEE ◽  
W. L. MATHAY
Keyword(s):  
Structural Steel ◽  
Oil Recovery ◽  
Stainless Steels ◽  
High Strength ◽  
Process Conditions ◽  
Low Alloy Steels ◽  
Chemical Plants ◽  
Steel Work ◽  
Corrosive Attack ◽  
Light Oil

Abstract Data are presented showing the types of constructional materials that are resistant to the many corrosive environments in coal-chemical plants. The protection of structural-steel work by paints is viewed from the standpoint of minimizing maintenance costs. To minimize the corrosive attack, copper steels and high-strength low-alloy steels are frequently used for outside structural-steel work, and stainless steels are used for roofing and siding applications. Coal-handling equipment, and processing equipment such as primary coolers, tar stills, and light-oil stripping-stills are discussed with regard to the mitigation of corrosion through the proper selection of materials and changes in process conditions. Stainless steels such as AISI Types 304 and 316 were found to be economically resistant to corrosive attack in primary coolers, ammonia saturators, tar stills and light-oil recovery equipment, but should be used only in locations where plant corrosion tests have shown the use of these steels to be justified. 8.8.1

Precipitation on Low Angle Boundaries in Al-Zn-Mg

1980 ◽  
Vol 38 ◽  
pp. 374-375
Author(s):  
Diane M. Vanderwalker
Keyword(s):  
Grain Boundaries ◽  
High Strength ◽  
Boundary Structure ◽  
Aircraft Industry ◽  
Precipitate Free Zone ◽  
High Angle ◽  
Adjacent Region ◽  
Free Zone ◽  
Widespread Interest

There is a widespread interest in understanding the properties of Al-base alloys so that progress can be made toward extending their present applications in the aircraft industry. Al-Zn-Mg is precipitation hardened to gain its high strength; however, during aging the formation of heterogeneous precipitates on the grain boundaries creates a precipitate-free zone in the adjacent region. Since high angle grain boundaries are not easily characterized, it is difficult to establish a relationship between the precipitate and the boundary structure. Therefore, this study involves precipitation on low angle grain boundaries where the boundary and the precipitate can be fully analyzed.

Sign in / Sign up

Export Citation Format

Share Document