ENGINEERING SCIENCE, Other Engineering

QUESTION 7
As a forensic materials expert – you have been asked to identify a metallic powder found on the clothing of someone suspected of fabricating an incendiary device used in an armed robbery.
The suspect suggests that the powder is tungsten – which he uses a lot in his line of work. The police believe that the powder is part of a chromium/silver/nickel mixture often used in such devices. Armed with the following information from an X-ray powder diffraction analysis – what can you conclude?
Using Cu ka radiation of 0.1542nm, three large diffraction peaks were observed at 44.4°, 64.6° and 81.7°.

QUESTION 9 – Crystallographic transformation
On cooling from the molten state, titanium solidifies into a BCC lattice structure. However, on cooling to below 880°C, a change occurs whereby the crystal structure transforms into an HCP structure. Assuming the number of atoms remains constant and that the lattice parameters are as shown below, calculate the volume change associated with this transformation.
For the BCC lattice: a = 3.32Å
For the HCP lattice: a = 2.956 Å and c = 4.683 Å
Titanium is a commonly used metal in engineering structures. Explain why your findings above should be cause for concern if these engineering structures are to be used at high temperatures.
Posted Date: 3/25/2013 9:14:33 PM | Location : Australia







Related Discussions:- ENGINEERING SCIENCE, Assignment Help, Ask Question on ENGINEERING SCIENCE, Get Answer, Expert's Help, ENGINEERING SCIENCE Discussions

Write discussion on ENGINEERING SCIENCE
Your posts are moderated
Related Questions
Factors affecting accuracy 1. The transducer must be located in an appropriate place and with an appropriate orientation to measure the measurand accurately. 2. The introduc

Write a detailed report under the theme "Legal Issues and Professional ethics in Engineering". Some of the topics that you can consider, but not limited to them, are as follow:

ENGINE TORQUE It is the force of rotating action about the crankshaft axis at any given instant of time. It is given by,

This Compression After Impact (CAI) test fixture was developed by the Boeing Company. The specimen, typically, but not necessarily, a quasi-isotropic laminate, is 6" long, 4" wide,

Thrust indication: Although rpm gauges give an indication of the rotational speed of the compressor, they do have one drawback. They do not normally indicate the thrust output

In the previous discussion, we investigated the static aeroelastic behaviour of straight (unswept) wings. These wings are characterised by an effective decoupling of wing bending a

stuck on a project that requires 5 outputs with 6 inputs and all formulas

If a single energy eigen value corresponds to more than one eigen function then degeneracy is said to be exist and the number of wave function associated with a single value of ene

Hello, I''m doing a project that needs an ANSYS software for analysis calculation, is it possible to do me that if I provide you all the the information needed. Thank you

Q 1.what is the difference between BJT and FET.What is Biasing?Discuss abt diffrent Biasing techniques?Write the advantages and Volatage divider biasing over other biasing?what is