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Engineering, Mechanical

Globalspec.com 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.

Fundamentals Of Machine Tools US Army training manual from Machinest

Hardness University of Maryland USA

  • WHAT IS HARDNESS?
  • HARDNESS MEASUREMENT
  • HARDNESS MEASUREMENT METHODS
    Rockwell Hardness Test
    Brinell Hardness Test
    Vickers Hardness Test
    Knoop hardness
    Shore
    Others
      Mohs Hardness:
      Barcol Hardness
  • HARDNESS OF ELECTRONIC PACKAGING MATERIALS:
  • COMPARISION OF HARDNESS MEASUREMENTS
  • HARDNESS MEASUREMENT EQUIPMENTS
  • RELATION OF HARDNESS TO OTHER MATERIAL PROPERTIES
  • REFERENCES

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

icrank.com
A start page for engineers that provides the most needed design resources, whether you need a vendor, a spec, or information. Much information, including:

Aluminum Association site features on-line store of publications, the New Aluminum textbook, aluminum statistics.
The Rod ∓ Bar site provides information on free cutting brass, copper brass forgings and bronze sleeve bearings.
The Copper Page covers the properties and uses of copper and its alloys.
Material data sheets on 30,000 plastics. Search for a plastic materials data sheet using product or generic name.
Matweb.com Data on over 15,000 materials. MatWeb's database currently includes comprehensive coverage of thermoplastic and thermoset polymers, aluminum, cobalt, copper, magnesium, nickel, steel, titanium and zinc alloys, plus ceramics.
Polymers.com A plastics industry trade magazine
Principalmetals.com Materials property data on more than 5000 ferrous and non-ferrous materials.
Bolt Science
Information relating to bolted joints and to threaded fasteners in general. Including Bolted jointed glossary, Info on bolted joints, Bolted joint tutorial, and Links to many sources of information.
Compressed Air
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.

Compressed Air Systems Information
Free Distribution U.S. Military Compressed Air Publications for training and educational programs.
Excellent technical information.

Compressed air - Glossary of terms


Bearings
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?

Guide to Rolling Element Bearings
University of Bristol

Bearing Operating Ranges
Bearing Types
Bearing Selection
Bearing Codes
Installation
Applications

Welding
US Army Welding Handbook - Welding Theory And Application
US Army Welding Handbook - Glosssry of Welding Terms

Basic information on various welding techniques by American Metallurgical Consultants


Mechanical Engineering
The on-line magazine of the American Society of Mechanical Engineers.


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