| Tip of the
Month |
The use of impulse calibration for shock accelerometers
compares output of the sensor under test and the reference at
multiple excitation levels from 20g's to full scale, as compared
with sinusoidal calibration that is typically capped at 10g's.
Impulse calibration also provides linearity over a larger range and
detects anomalies like zero
shift. |
| Quick Links |
ISO TC 108 -
Mechanical vibration, shock and condition monitoring
ISO TC 108/SC
3 - Use and calibration of vibration and shock measuring
instruments
|
|
|
|
Purdue
applies Piezoelectric Tools for Composite Damage
Detection |
|
 A team of researchers at Purdue University is
producing a new generation of tools for inspecting, evaluating, and
repairing composite materials in military aircraft, including the
CH-53E blades and V-22 fuselage in the Marine Corps. In future
aircraft, composites will revolutionize the capabilities of
heavy-lift helicopters and other platforms. The CH-53K is a
prime example; its design incorporates composites for its exterior,
internal airframe and rotors...
|
|
Detail on
Constant Current & Piezo-Resistive
Accelerometers |
|
 Due to a number of requests for more detail on
the new ICPR™ technology previewed last month, we have included a
more detailed description this month. The following paper was
presented in late October by PCB Senior Scientist, Robert (Bob) Sill
at the SAVIAC symposium in San Diego, California. Bob and the
team at the PCB Advance Sensor Design Center in San Clemente,
California work on silicon designs for shock and vibration sensors,
as well as advances in vibration sensors and signal conditioning for
the Aerospace & Defense markets.
http://www.modalshop.com/filelibrary/U-060Sill_DC_Response_from_an_ICPR_60kG_PR_MEMS_Sensor.pdf |
|
|
|
The Modal
Shop is celebrating its 20th Anniversary in 2010. We
hope that you've enjoyed our newsletter again this month, as well as
its educational content over the last few years. No where like
the sensing calibration fields are certainty and reliability more
important. We're here to serve you with all your dynamic sensor and
calibration needs.
Sincerely, |
|
Michael J. Lally The Modal Shop
A PCB Group Company
| |
