Link to

What's New at Engineers4engineers- Latest Additions and Changes

Our "What's New" Email Newsletter (approximately monthly) keeps you posted on new items added to the site.   To receive the newsletter, put your email address in the box below. Your address will not be used for any other purpose, and will not be passed to any other party.
Email address:    

Our visitor count now exceeds 148 000
New - January 2002
In our Non-Engineering Section
Excellent Links by John C. Dvorak
Company/People Finders - Computer Companies/Support - Computer News - Computer Software - Entertainment - Free Email/WEB pages - Good Reading/Misc - News Related - Reference & Special sites - Search Engines - Starting Points/Metasite - Travel.

Telephone Directories on the Web; UK Yellow Pages; Scoot; UK Electronic Yellow Pages; Thomson Directories; UK White (Residential) Pages; BT UK Phone Directory;UK Numbering System; UK Telephone Code Locator; UK Telephone, Fax and Email Preference Service; UK Telcos; BT; Energis; Kingston Communications (Hull); Kingston Business Communications; NTL;
ADSL Guide; Beginner's Guide to ADSLThus Telecommunications (formerly Scottish Telecom)
UK Internet Service Providers - List of UK ISPs and comparative test results from Internet Magazine
Government, Regulatory and Standards Bodies
Office of Telecommunications (OFTEL); European Telecommunications Office Has a page of links to regulatory bodies around the world; International Telecommunications Union; European Telecommunications Standards Institute

New - September 2001
Now on-line - Guidelines for Writing Technical Articles for Publication in Eng4eng

New Section - Power Engineering

Hydraulic Power Station Axial Turbines - Selection for High Efficiency
An Engineers4engineers monograph
MSc. Eng. Idielín Martínez Yon and Dr. Eng. Raúl Olalde Font.
Renewable Energy Center. (CETA) Universidad Central de Las Villas.

Do you have, or can you write technical articles which would be of interest to our visitors ?
We are looking for good quality articles which will be put into our Technical Information Pages. Full reference and links to author.
For full information click here

New - August 2001
Additions to our Directories of Manufacturers Products Section Instant access to over 580,000 electrical, mechanical and optical components. Online search by specification. Up-to-date, accurate - and immediate. Also excellent technical library with application notes.

Additions to our Units of Measurement and Instrumentation Section

A Dictionary of Units by Frank Tapson - University of Exeter UK
This provides a summary of most of the units of measurement to be found in use around the world today (and a few of historical interest), together with the appropriate conversion factors needed to change them into a 'standard' unit of the S I. The units may be found either by looking under the category in which they are used [such as length, mass, density, energy etc.], or else by picking one unit from an alphabetically ordered list of units. There are NO units of currency. There is an outline of the S I; a list of its basic defining standards and also some of its derived units; then another list of all the S I prefixes and some notes on conventions of usage. There is a short historical note on measures generally; descriptions of the Metric system, the U K (Imperial) system with a statement on the implementation of 'metrication' in the U K, and the U S system.Finally there is a list of other sources concerned with the topic of measures and units (including other Web sites) and also some notes about this document. It also gives access to 28 online calculators for changing units.

New - July 2001
Additions to our Physics Section

Periodic table of Elements with atomic weight, meltimg points, boiling points by Monachos

Additions to our Thermodynamics Section
Thermodynamical data for various materials by Monachos

  • Density
  • Specific Heat.
  • Conductivity.
  • Water properties.
Additions to our Electrical and Electronic Engineering Section
Electrical Engineering Resources by Monachos
  • Asynchronous 3 phase motor protection.
  • Motor types according to DIN IEC34 - Part 7.
  • IP protection categories according to DIN 40050.
  • Motor sizing for various applications.

Additions to our Mechanical Engineering Section

Fundamentals Of Machine Tools - US Army training manual from Machinest

Hardness - University of Maryland USA

    Rockwell Hardness Test
    Brinell Hardness Test
    Vickers Hardness Test
    Knoop hardness
      Mohs Hardness:
      Barcol Hardness

The EngineersToolbox
A freely-available collection of advanced online computational and reference modules for professional and student engineers everywhere.
Computational modules include:
  • Beams
  • Cylinders
  • Columns
  • Dynamic Systems
  • Materials Properties
  • Section Properties
  • Vibrations
  • Fracture Mechanics
Additions to our Design for Manufacture Section

Industrial Technology - Feature Articles Archive (UK)

  • Machine Building
  • CAD & Design Office Equipment
  • Drives, Motors and Controls
  • Electrical & Electronic Equipment
  • Test and Measurement
  • Fastening and Joining
  • Fluid Control
  • Materials Watch
  • Mechanical Components
  • Pneumatics & Hydraulics
  • Power Transmission
  • Sensors
  • Design and General
Additions to our Mathematics, Mathematical Models and Simulation Section
Free engineering, scientific and financial calculator (UK)
Includes functions for statistics; use of different number bases (binary, octal, hexadecimal and base-n); units conversions and physical properties and constants; computes time functions; and has a stopwatch feature and RPN (Reverse Polish Notation). Runs on Microsoft Windows (WindowsNT, Windows95/98/ME, Windows2000/XP) and WindowsCE (Pocket PC). You can download Calc98 free!

Online units conversion and constants database

Abstract Algebra on Line Northern - Illinois University

History of Math Geometry net
Comprehensive links to HIstory of Math(s)

Eng4eng home

New - June 2001
Addition to our Mechanical Engineering Section
Compressed Air Systems Information
Free Distribution U.S. Military Compressed Air Publications for training and educational programs.
Excellent technical information.
Addition to our Materials Section
An Engineers4engineers monograph contributed by The National Physical Laboratory UK
G Dean and R Hunt National Physical Laboratory. UK
New - May 2001
Addition to our Safety, EMC, Radiation, and Compliance Section


Addition to our Fasteners, bolts, nuts, screws section

An Engineering Insight into the Fundamental behaviour of Tensile Bolted Joints
by Dr Salmon Fernando, Ajax Technology Center, Australia
Other useful information on fasteners on this site
A New Section:
Mathematics, Mathematical Models and Simulation
  • BUBL LINK Catalogue of selected Internet resources - Mathematics
    JISC, the Joint Information Systems Committee of the Higher Education Funding Councils of England, Scotland and Wales and the Department of Education for Northern Ireland.
  • Math on the Web - American Mathematical Society
  • Guide to Available Mathematical Software - National Institute of Standards and Technology USA
  • Why bother with Simulation ? - An Eng4eng Monograph

New - April 2001
Addition to our Mechanical Engineering Section
Basic information on various welding techniques by American Metallurgical Consultants

Aluminum Welding
TIG Welding
MIG Welding
Flux Cored Welding
Stick Welding
Submerged Arc Welding

Addition to our Glossaries Page
Glossary and explanation of UPS terms
Addition to our Electrical and Electronic page
The National Grid - Quality of Supply

New - March 2001
Addition to our Technical Links page
New catgory - Civil Engineering

Addition to Virtual Libraries Section

AVEL: The Australasian Virtual Engineering Library
Quality information including links to over 3,300 IT and engineering related websites, and to full-text papers and reports. A collaborative venture lead by 5 Universities, Institution of Engineers Australia, Distributed Systems Technology Centre and the Centre for Mining Technology and Equipment.
Our visitor count now exceeds 100 000
New - January 2001
A New Section:
History of Technology and Science
  • History of Technology Resources Available on the Internet via ICE
  • The Center for History of Physics
  • WWW Virtual Library for the History of Science, Technology & Medicine
A New Section:
Electronic & Electrical Components
Suppliers, Data Sheets, Application Notes, etc. From amplifiers to zener diodes
Additions to Electrical and Electronics Section
Single phase and 3-phase voltages throughout the world.
Information from four sources Voltages - frequency - plug diagrams.

Electrostatics - The ESD Guide - by Electrostatic Solutions.
A very useful resource - The basics of implementing ESD damage prevention in electronics manufacture, using the new 61340-5-1 European standard. "The ESD Guide" is an on-line guide to some of the key points of the 61340-5-1 & 2 documents. Following ratification by CENELEC of both of the IEC documents in mid 2000, BSI will be publishing both BS EN 61340-5-1 and BS EN 61340-5-2 in mid 2001. These two BS ENs are technically identical to the original IEC documents. They will supersede EN100015: 1992 and will be mandatory in the UK.

New - December 2000
A new Section Units of Measurement and Instrumentation
  • Metrics USA
    All About the Metric System. Detailed requirements for the selection of units, consistent with ANSI/IEEE Std 268. Conversion factors recommended by the Metrication Operating Committee of the Interagency Council on Metric Policy for use by all agencies and departments of the Federal Government,
  • Important features & concepts on the following areas of measurement
    by NPL the National Physical Laroratory (UK)
    • Atomic Time
    • Colour
    • Length
    • Mass
    • Temperature
    • Light

  • Units of Measurement
    by NPL the National Physical Laroratory (UK)
    • Time
    • Length
    • Mass
    • Electric current
    • Thermodynamic temperature
    • Amount of substance
    • Luminous intensity
    • Examples of SI Derived units
    • Internationally recognised non SI units
    • Background information
    • SI prefixes
    • SI conventions

In our Mechanical Engineering Section

Compressed Air Management - An Eng4eng Monograph
One similarity discovered throughout all industry is that wasted energy in compressed air is quite common. This squandering of energy can be attributed to several categories.
In our Design for Manufacture Section
Heat Transfer in Polymer Processing - An Eng4eng Monograph
by Chris Brown, National Physical Laboratory (UK)
Do you have, or can you write technical articles which would be of interest to our visitors ?
We are looking for good quality articles which will be put into our Technical Information Pages. Full reference and links to author.   Please email us for further information.

New - November 2000
In our Electrical and Electronics Section
Electromagnetics   by
James Clerk Maxwell - Maxwell's Equations - Linear Maxwell's Equations - Electrostatics - AC Electromagnetics
In our Finite Element Resources Section
Boundry Method Analysis
The boundary element method (BEM) is an important technique in the computational solution of a number of physical or engineering problems. In common with the better-known finite element method FEM and finite difference method FDM , the boundary element method is essentially a method for solving partial differential equations (PDEs).
In our Acoustics and Vibrations Section
Acoustics A general resource in acoustics. Useful links

NVH materials
Links to information and websites around the world for materials that affect
Noise, Vibration, and Harshness (NVH) performance.

In our Thermography Section
Thermology on the Internet by K. Ammer
A mine of information
A very comprehensive overview. Contains many references and links to many sites.

Additions October 2000
In our Electronics section
Lexicon of Semiconductor Terms, Abbreviations and Acronyms by Intersil.

Dictionary of terms used in the semiconductor manufacturing industry by Sematech

In our Patents section

The Patent Office (UK) Lots of information available on-line.
In our Materials Section
Galvanic Corrosion Potential Chart by Penn Manufacturing and manufacturing Corp.
Galvanic corrosion potential is a measure of how dissimilar metals will corrode when placed against each other in an assembly. Metals close to one another on the chart generally do not have a strong effect on one another, but the farther apart any two metals are separated, the stronger the corroding effect on the one higher in the list. Plating Guidelines by Penn Manufacturing and manufacturing Corp.

Plating Guidelines by Penn Manufacturing and manufacturing Corp.

Im our Safety, EMC and Compliance Section
The "CE" Marking of Machinery A technical article by John Sparks B Sc., C Eng., FIEE., FIMgt

Additions September 2000
A new section Chartered Engineers
This answers the question "What is a Chartered Engineer", and provides a list of Chartered Engineer Consutants/Designers who wish their expertise to be known in our pages.
In our Software and IT Section
Association for Computing Machinery (USA) Founded in 1947, ACM is the world's first educational and scientific computing society. Today, our members — over 80,000 computing professionals and students world-wide Authoritative publications, pioneering conferences, and visionary leadership. Includes a useful searchable Digital Library
In our Electrical and Electronics Section
Datasheets for electronic components and semiconductors, especially for obsolete parts. Technical documentation, application notes, pinouts, cross references and manufacturer listings, Provides design engineers and semiconductor professionals with information they need for designing a new or repairing an existing products.
In our Physics, General Science, and Mathermatics Section
The New Scientist Online edition of The New Scientist Magazine (UK) Very professional, informative, and seachable. Good searchable data base of mathematics. An excelent reference source.

In our Materials Section
Brass by the Copper Development Association.
Technical information, technical publications, recycling, applications, advisory service, history etc.
In our Non- Engineering Section
Welcome Break, Travelodge, Travel Inn
Three excellent budget motel accommodations. Information and booking facilities.

Acronym Finder. Over 161,000 acronyms, abbreviations, initialisms and definitions. Acronyms, abbreviations and initialisms about all subjects, including information technology, telecommunications, military, government, and much more.

Additions July 2000
In our Safety and EMC section
Safety, Competency and Commitment: Competency Guidelines for Safety-Related System Practitoners IEE (UK)
These guidelines have been produced to help organisations assess and record the competencies of staff working on all aspects of safety-related systems. This guidance is aimed primarily at safety-related system practitioners working in the field of safety-related Electrical, Electronic and Programmable Electronic Systems (E/E/PES).
In our Electronic and Electrical Section
Datasheet Locator
Locate product datasheets from hundreds of electronic component manufacturers worldwide. Read on-line and/or download.
In our Non-Technical section.
Inland Revenue
News and information on tax and national insurance matters in the United Kingdom. The Inland Revenue is responsible, under the overall direction of Treasury Ministers, for the efficient administration of income tax, tax credits, corporation tax, capital gains tax, petroleum revenue tax, inheritance tax, national insurance. contributions and stamp duties. The Department's job is to provide an effective and fair tax service to the country and Government.

Inland Revenue IR35: Countering Avoidance in the Provision of Personal Services

Higher Education Map by University of Wolverhampton UK
Shows locations of universities and higher education colleges around the country, with hyper-links to these establishments.

Instant Translations by Babel Fish now includes translations English to and from Russian, as well as translations English to and from French, German, Spanish, and Portugese.

Additions June 2000
In our Control and Robotics Section
A wealth of information on Electric Motors, Drives, and Motion Control.
In our Mechanical Engineering Section
Tech Tips by Timken Tech Tips Volume IV
Issue 1: BEARING DAMAGE CHECKLIST: Early signs and symptoms of differential and transmission problems

Tech Tips Volume III
Issue 1: Proper Heating and Freezing Practices When Installing Press-Fit Cones or Cups
Issue 2: Lubrication Procedures for Packing a Bearing with Grease

Tech Tips Volume II
Issue 1: Bearing Damage Checklist: Early signs and symptoms of wheel-end problems
Issue 2: Bearing Damage Checklist: Signs of advanced wheel-end problems that cause bearing damage in conventional wheel ends
Issue 3: Specifying and Ordering the correct combination of replacement bearing parts for conventional wheel-ends

Tech Tips Volume I

Issue 1: What is bearing adjustment? (part 1)
Issue 2: What is bearing adjustment? (part 2)
Issue 3: Identifiers of Poor Bearing Adjustment
Issue 4: Identifying the Adjusting Nut System
Issue 5: How Nut Torquing and Back-Off are Used to Set Wheel Bearings
Issue 6: Why Oscillate or Rotate a Bearing
Issue 7: Why Use a Dial Indicator?
Issue 8: Proper Lubrication Helps Ensure Long Life, Lower Cost-Per-Mile
Issue 9: Lubrication Fill Procedures for Non-Drive Axles
Issue 10: Lubrication Fill Procedures for Drive Axles
Issue 11: How do you Rate on Bearing Adjustment?

In our Electrical and Electronic Section
SMT (Surface mount technology) Magazine Online Lots of useful information on SMT.
In our Materials Sectiom
Corrosion and Materials Reference Library
An excellent resourse, including: Corrosion Data; Material Properties; Failure Analysis; Newsletters; Discussion Forums; Special Corrosion Topics:

Additions May 2000
In our Electrical and Electronics section

Exports and Imports Worldwide - Electrical and Electronic In our Materials Section

Corrosion Source
An excellent souce of corrosion information, including principles underlying multiple disciplines, from electrochemistry and fluid mechanics to materials science and engineering.

New - Jobs Section
A new service for Job Hunters, and for Employers and Recruitment Agencies
We are pleased to announce that Eng4eng has teamed up with Jobsite, providing unparalleled recruitment services for all our visitors.

Jobsite is the longest-established multi-sector Internet recruitment platform in the UK, attracting hundreds of thousands of candidates every month from all industry sectors including IT, Telecommunications and Engineering, as well as Sales, Marketing, Management, Accountancy, Secretarial and Administration.

Job Hunters
Engineering and IT - UK - Europe.
Mechanical, Electrical, Electronic, Civil, Software, IT, etc. Search Europe's leading Engineering and IT jobs, or register now to receive the latest jobs-by-Email and Jobsite's other award winning services.

* Find the latest vacancies fast with a keyword search.
* Receive targeted jobs by Email.
* Send Your CV to Recruitment agencies.
* Apply for the latest targeted jobs.
* Read Industry news and career advice.

Employers and Recruitment Agencies:
Find the perfect candidate fast! Find out more about Jobsite's award winning recruitment services.

In our Non-Engineering section

Open Government
UK Government Information Service

The Home Office
The Home Office web site. Key subjects as the first part of a major redesign project. With A-Z index.

In our Standards section

Standards Glossary
A comprehensive list of natonal and international standards by The Standards Current Issues Group (SCIG)

Additions March 2000

A New experimental feature on our front page - Gear Train

The GearTrain is the leading network of independently owned sites created by and for engineers/technologists.

  • Efunda - Engineering Materials

    Masses of Engineering information including:
    Materials: Periodic Table, Steels, Aluminum Alloys, Polymers, Piezo Materials
    Design Center: Plastic Design, Wire and Sheet Gages, Springs, Screw Threads, O-Rings
    Processes: Sand Casting, Stamping,Annealing, Rapid Prototyping, Machining.
    Formulas: Beam Bending, Vibration, Fluid Mechanics, Heat Transfer
    Mathematics: Area Properties, I-Beams, Trigonometry, Taylor Series, Laplace Transform

  • Thermal Connection
    Masses of information - Thermal Data
    Thermophysical Data, Links to Data and Property Calculation Sites on the Web, Aluminum Alloys, Polymers, NIST Standard Reference Data Products- Material Properties, CenBASE/Materials on WWW, Material Properties of over 25,000 plastics, metals, composites, ceramics, rubbers and adhesives, Thermal Conductivity of Hi-Therm Aluminum Nitride (shape memory alloys), Gas Heat Capacity as a function of temperature, Gas Thermal Conductivity as a function of temperature, Database of solid materials, some a function of temperature, Database of 468 different gases and liquids, Thermal properties of steam and moist air, Thermodynamic Assessment of the Ba-Cu-Y System, and much more...
In our Safety and EMC section
  • OSHNET -- A one-stop shop for Safety and Health! Work Safety (USA)
    Finding information about occupational health and safety no longer means having to burrow through thick, unwieldy volumes of government reports!
In our Patents Information Section
  • Derwent Information is the world's leading provider of patent information products. A complete service to the Engineering sector, providing products and services to match all research requirements and suit all budgets.
  • The Chartered Institute of Patent Agents (CIPA) The professional body for patent agents in the United Kingdom. Basic information on: Trade Marks, Designs, and Copyright; free initial advice, and more.
  • The Intellectual Property Network (IPN) Search and view patent documents from the U.S. and Europe as well as patent applications published by the World Intellectual Property Office (WIPO).

Additions February 2000

In our Safety, EMI and EMC section
Summaries of General Product Safety Directive 92/59/EEC - Product Liability Directive 85/374/EEC - Low-Voltage Directive (LVD) 73/23/EEC - EMC Directive 89/336/EEC - Machinery Directive 98/37/EC - Medical Device Directive (MDD) 93/42/EEC - Active Implant-able Medical Device Directive (AIMD) 90/385/EEC - Pressure Equipment Directive (PED) 97/23/EC - Telecom Terminal Equipment Directive 91/263/EEC

In our Tech. Information Section Why bother with Simulation ? An Eng4eng Monograph. With examples drawn from his own experience, Dr. Mike McCann puts a personal case for making use of current modeling and simulation methods.

In our Non-Technical Section

  • A complete interactive world atlas on the Web. Just click on the world map, or enter the name of a city, town or village. Zoom in on any part of that map, just by clicking on the area you wish to see in more detail, or you can choose to look at a new area. Scale indicator at the bottom of the map.
  • Telephone Numbers in the UK - British Telecom. Enter the Name of the business or person you are looking for and the Area in which they reside, then press the relevant search button.
  • UK National Telephone Code and Number Change. The UK's telephone numbering system is being reorganised. This site contains important information for anyone who uses a telephone in the UK or calls the UK from abroad.
In our Units of measurement section
METRICS USA   All About the Metric System. Detailed requirements for the selection of units, consistent with ANSI/IEEE Std 268. Conversion factors recommended by the Metrication Operating Committee of the Interagency Council on Metric Policy for use by all agencies and departments of the Federal Government,

In our Directories - Products and Manufacturers section (USA) Parametric search and specification system of Engineering Components.

Links to technical information Links to experts section Link to technical software section Link to books section
Link Technical Jobs Link to 'what's new' information Link to non-technical section Link to advertising information
Link to Chartered Engineers Link to Site Search facility About Engneers4engineers Eng4eng home