Shake, Rattle and Roll eNews is circulated exclusively to
test engineers and managers involved in vibration test and hopes to bring
you some useful technical snippets gleaned from around the world and from
around the vibration test industry. We always look forward to your inputs,
please send us your views to
mpi.news@mpiuk.co.uk
HELLO again from **SHAKE, RATTLE &
ROLL** the periodic
environmental vibration technical review presented by m+p
international - the shaker controller specialists.
In this edition:
1. Calculators for every occasion.
2. Slide rules ?
3. Materials data base has it all ... maybe.
4. October is a busy month!
5. Two ways to skin a web ferret ...
6. Back issues - topics you may have missed in previous editions.
This email is circulated exclusively to test engineers and
managers involved in vibration test and hopes to bring you some
useful technical snippets gleaned from around the world and from
around the UK test industry.
Thank you for your feedback on previous editions and if you haven't
sent in your comments or ideas please do so, we would love to hear
from you at: mailto:mpi.news@mpiuk.co.uk
Also please visit our web site at http://www.mpiuk.co.uk for all the
latest news.
1. Calculators for every occasion.
=====================================================
I had some very positive feedback on the conversion calculator
featured last time. If it doesn't do what you need then the following
(unlikely) site has numerous others, both web and program based,
covering all aspects of engineering units conversion and calculation.
There is some good climatic stuff here too:
http://www.sensorsportal.com/HTML/TOOLS/conversions.htm
Note that if you finish up back at http://www.sensorsportal.com
then click the Tools link in the list at the top of the page.
2. Slide rules ?
======================================================
If like myself you are of a certain age, then you'll remember the
instinctive feel that slide rule calculations gave us for the numbers
we were dealing with.
In a nostalgic search for this visual feedback in calculations we
have produced
a vibration calculator program that uses slide rule type input and
display to
compute the classic frequency, acceleration, velocity and
displacement
for sinusoidal motion. Its fascinating to see these
interrelationships
presented this way and see for example the sensitivity of
displacement
to changes in frequency. It includes common units conversions and is
also
useful for checking shaker capability limits.
If you use one of those give away cardboard vibration calculators,
are
looking for something to use as practical training aid or just like
gadgets then email for a CD copy to
mailto:VibSlideRule@mpiuk.co.uk
It is also on our web site for download (2.5MB), see
http://www.mpiuk.co.uk/vibsliderule.htm
ps if you have fond memories of Faber Castell etc try
http://www.sliderule.ca/ ... the Internet never ceases to amaze me!
3. Materials data base has it all ... maybe.
=====================================================
If you need a good database of material properties then try:
http://www.matweb.com/
There are details of all material properties here from stiffness to
density on thousands of materials and because it's entered by the
manufacturers it has lots of specials too. So there is a better than
maybe chance you'll find what you have been looking for.
4. October is a busy month!
=================================================
Some dates for your diaries:-
Oct 1 -3 Wayne Tustin from the Equipment Reliability Institute
is in Thun (Switzerland) to teach a short course on
practical vibration and shock testing.
The location is Ruag Munition (ex-Swiss Ammunition
Enterprise Corp.), Dept. of Environmental Technology,
Allmendstrasse 74, CH-3602, Thun, Switzerland.
http://www.equipment-reliability.com/switzerl.htm
Oct 1-2. EIS Simulation Test and Measurement Conference
at Jaguar Cars Visitors Centre, Castle Bromwich.
http://www.e-i-s.org.uk/
Oct 9th. SEE "Evaluation of the performance uncertainties
of climatic test chambers" at TRW Automotive Technical
Centre, Solihull.
http://www.environmental.org.uk
5. Two ways to skin a web ferret ...
==================================================
Finding specific information on the web can be time consuming but
thankfully tools are improving.
Thanks to Ian Black at MSX who recommended the Web Ferret.
This is a piece of free software that runs on your PC and searches
its own database of search engines for keywords you give it. It runs
in background mode and produces a list of related sites. This is the
same idea as a Meta search engine but runs faster and gives a neat
database type display that can be sorted to find the wheat from the
chaff. Download it from http://www.zdnet.com/ferret/index.html
Another Meta search site that is well worth a look is http://ixquick.com
This is a UK site that again interrogates the top search engines
but this time ranks its results based on the popularity of the same
result pages on different search engines. This avoids search engine
bias.
6. Back issues - Please mailto:mpi.news@mpiuk.co.uk for an email
copy of any topic of interest from this or previous mpi-news
editions or review http://www.mpiuk.co.uk/back_issues.htm
a) Downloadable test standards
b) Shock and Vibration Q&A forum
c) Vibration software programs
d) m+p join forces to make The Alliance work harder for you.
e) Upcoming SEE Workshop and exhibition.
f) Specialist vibration forum - answers questions.
g) Web search engines for engineering topics.
h) Useful engineering directories.
i) Calculators (many and various)
Thanks for looking through this short newsletter and we look
forward to your inputs. Also please check out our web site at
http://www.mpiuk.co.uk or contact me, Richard Lax on
sales.uk@mpihome.com, if there is anything we can do for you.
If you found this at all useful please forward it to fellow test
engineers both inside and outside your company asking them to
subscribe directly. Please also send us your comments.
Regards
Richard Lax
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