The name of H. H. Uhlig and the work of the Corrosion Laboratory at M.I.T. are synonymous and familiar to corrosion engineers throughout the world. We are fortunate this month in…
Abstract
The name of H. H. Uhlig and the work of the Corrosion Laboratory at M.I.T. are synonymous and familiar to corrosion engineers throughout the world. We are fortunate this month in being able to publish an article describing the corrosion researches at M.I.T., from the pen of Professor Uhlig himself. Research on corrosion has been pursued at M.I.T. since the turn of the century, always on fundamental corrosion phenomena. As Professor Uhlig says at the end of his article, “money spent by industry or Government on basic corrosion research probably marks one of the soundest investments of present times”—the following gives a very good idea of what this has entailed at M.I.T.
R. Bhaskaran, N. Palaniswamy, N.S. Rengaswamy and M. Jayachandran
To analyze the different approaches used to estimate the cost of corrosion and understand the limitations so as to have proper appropriation in future appraisals.
Abstract
Purpose
To analyze the different approaches used to estimate the cost of corrosion and understand the limitations so as to have proper appropriation in future appraisals.
Design/methodology/approach
Four well‐known approaches to analysis of cost of corrosion viz., the Uhlig method, the Hoar method, NBS‐BCL input/output method and net present value method have been considered in great detail and the impact of these approaches on corrosion economy in different countries has been highlighted.
Findings
Uhlig method of estimating corrosion cost always gives a conservative estimate of the direct cost of corrosion. The direct cost of corrosion, as estimated by the Hoar method, is found to be somewhat higher than is the estimate made using the Uhlig method, as shown by Shibata of Japan. The NBS‐BCL method of input/output analysis, though apparently more scientific, is subject ultimately to uncertainties in quantifying the capital cost and intermediate output. The net present value method appears to be more realistic than do other approaches as it enables a life cycle costing of each structure/facility to be made and arrives at the most cost‐effective corrosion control method. Even though all the above four approaches enable an estimation of direct cost of corrosion, there is no standard approach to assess the indirect cost of corrosion.
Originality/value
In a developing economy, each and every industry has to go for systematic corrosion auditing in order to identify and adopt the most appropriate corrosion control measures and effect considerable savings. This paper would be of immense use in that regard.
Details
Keywords
Corrosion and Corrosion Control, by Herbert H. Uhlig. The aim of this 370‐page book is well summarised by the sub‐title, i.e. ‘An introduction to corrosion science and…
Abstract
Corrosion and Corrosion Control, by Herbert H. Uhlig. The aim of this 370‐page book is well summarised by the sub‐title, i.e. ‘An introduction to corrosion science and engineering’. The author, a well‐known authority on corrosion subjects, has been in charge of the Corrosion Laboratory, Massachusetts Institute of Technology, since 1946, but his research work in this field began as far back as 1936.
The Presidential Address to the Liverpool Engineering Society by Mr. Farthing (the salient points of which are reproduced in this issue) has particular bearing upon lubrication…
Abstract
The Presidential Address to the Liverpool Engineering Society by Mr. Farthing (the salient points of which are reproduced in this issue) has particular bearing upon lubrication and especially on young lubrication engineers. Mr. Farthing stressed the very wide field open to young engineers and the difficulties associated with training in order to cover as wide a field as may be necessary. It is usually so important to gain a wide knowledge before one can specialise and this is certainly the case with lubrication engineers. One cannot begin to fully appreciate the intricacies of a lubrication system with all its accessory components lubricating and guarding, for example, a large motive power plant or rolling mill, until one has more than a mere working knowledge of the plant itself, the duties it must perform, how it performs them and the snags that arise which might be overcome by correct lubrication. In view of the fact that lubrication systems are just as important in a textile mill as in a power station or a large brick works, the almost impossible‐to‐achieve‐range of knowledge that would simplify the work of a lubrication engineer is very obvious. Fortunately, lubricating principles apply to most cases and knowing how to apply one's knowledge from basic principles is the key to success in this difficult profession.
Gives introductory remarks about chapter 1 of this group of 31 papers, from ISEF 1999 Proceedings, in the methodologies for field analysis, in the electromagnetic community…
Abstract
Gives introductory remarks about chapter 1 of this group of 31 papers, from ISEF 1999 Proceedings, in the methodologies for field analysis, in the electromagnetic community. Observes that computer package implementation theory contributes to clarification. Discusses the areas covered by some of the papers ‐ such as artificial intelligence using fuzzy logic. Includes applications such as permanent magnets and looks at eddy current problems. States the finite element method is currently the most popular method used for field computation. Closes by pointing out the amalgam of topics.
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Keywords
Spray Unit. Alfred Bullows & Sons Ltd. have introduced Model 226–066 stationary Hydra‐Spray as part of the Graco range of equipment. It operates direct from 44‐gal. open‐top…
Abstract
Spray Unit. Alfred Bullows & Sons Ltd. have introduced Model 226–066 stationary Hydra‐Spray as part of the Graco range of equipment. It operates direct from 44‐gal. open‐top shipping drums and is skid mounted for ease of movement.
Fouzia Ounnar and Patrick Pujo
This research paper proposes that the conduct of supplier relationships can be improved through a “self‐organized logistical network”.
Abstract
Purpose
This research paper proposes that the conduct of supplier relationships can be improved through a “self‐organized logistical network”.
Design/methodology/approach
An analysis has been conducted on logistical supply chain which ensures to define a self‐organized logistical network. In such a network, each supplier can evaluate its own performance by using a decision‐making method involving multiple criteria. Indeed, such method is therefore recommended to reach a satisfactory solution. For that, a typology of performance was proposed and a multiple criteria method was chosen. Indeed, among several methods available, the Analytic Hierarchy Process (AHP) method has been chosen.
Findings
The paper suggests quantifying an evaluation of each potential supplier who responds to a call for proposal from a customer, according to rules and criteria that are impartial and common to all. The process enables the emergence of the “best” supplier. The proposed approach allows a balance to be achieved between load and capacity at the supplier level, and produces a smoothing of the load curve among the various suppliers with the long‐term objective of establishing a fair system among the suppliers on the network. Our approach suggests a customer‐supplier (C‐S) relationship control where all entities C‐S partners, communicate and negotiate to respond as best as possible to the customers requirements. To each supplier, we associate a decision‐making centre through which he can self evaluate his performance in order to be able to take part to negotiations within a self organized logistical network.
Originality/value
The research focuses particularly on the study of the decision‐making centre.