Tom Au
  • Member for 7 years
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  • New York, New York
In Engineering fields, how often do you find yourself being asked to be a "salesperson", and what is your reaction?
6 votes

"Salesmanship" in this context, means "being able to overcome resistance." "Resistance" can take one of two forms. It could be "reasonable" resistance for e.g. economic reasons, whereby the proposed ...

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How can we prevent/detect hydrogen embrittlement?
5 votes

Like any number of engineering problems, solutions for hydrogen embrittlement fall into two categories: 1) prevention and 2) cure. "Embrittlement," in this context, arises from the diffusion of ...

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What kind of protection should I give structural steel in a natatorium (swiming pool) environment?
5 votes

Safety issues in a "natatorium" (swimming pool) environment include the following: 1) Chlorine and other high acid gases that can corrode the steel. Both galvanization and paints/coatings can help, ...

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Do I need to worry about galvanic corrosion when inserting a steel bar through aluminium?
4 votes

Wikipedia defines galvanic corrosion as: "Galvanic corrosion is an electrochemical process in which one metal corrodes preferentially to another when both metals are in electrical contact, in the ...

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How can I measure the brightness of a LED?
3 votes

The brightness of a light emitting diode (or anything else) is measured by luminous flux, which is the impact of the light on an eye, adjusted for different wavelengths. Luminous flux is measured by ...

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What does the steel grade "11SMn30" mean?
3 votes

The numbers from 1 to 9 indicate the type of steel. The first 1 is for carbon steel, and the second 1 and the S mean that sulfur has been added to it. The Mn stands for "manganese" and 30 is the ...

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Is it possible to "pump" a powder?
2 votes

You can pump both liquids and powders into a "mold" using injection molding. It works more easily with liquids, but it can also be done with small particles such as powders that are injected into ...

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Meaning of "female eye" in a list of parts
1 votes

The operative engineering term is "screw" (no pun intended). The screw itself is the "male" part, and the shaft into which a screw is inserted and rotated is a female part. The "eyes" referred to are ...

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In aluminum machining, what are the most common factors that might cause a machined component to have warping issues?
1 votes

Compared to most other metals, aluminum is a relatively low performance material. It's useful mainly for low speed, low volume, low temperature variation, and "coarse" applications. It tends to "warp,...

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What kind of math do engineers really use?
0 votes

When I was taking courses as a "special student" at Carnegie Mellon University in Pittsburgh (in the mid-1970s),"engineering mathematics" consisted of linear algebra, ordinary and partial differential ...

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