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Fundamentals of Torque- tension and Coefficient of Friction Testing - PCB
iction coefficient values from a particular lot of samples tested. Using the calculated standard deviation (n-1 formula) of the lot tested and assuming a normal distribution of results the –3-si. with 10-30 samples will be tested to determine the friction range. The –3-sigma values estimate the range limits that the entire po.
TN-31 Air Blast and the Science of Dynamic Pressure Measurements - PCB
When using these results, the velocity (inches/second) of the gas passing over the transducer must be applied as a multiplier to the abscissa (x-axis) to convert its units to Hz.
Loss budget: How much light can you lose and still maintain network ...
Loss budget is the total acceptable amount of optical power loss a fiber optic link can have. Expressed in decibels, losses are often caused by bend radius violations, attenuation and all the other fun stuff that comes with mismanaging fiber optic cable.
FUNDAMENTALS OF TORQUE- TENSION AND COEFFICIENT OF FRICTION TESTING - PCB
More and more fastener coatings are being required to not only comply with corrosion specifications, but to also fulfill specified tightening characteristic requirements. These requirements include at least a torque-tension test and at times a coefficient of friction test.
Measuring displacement using accelerometers - Wilcoxon Sensing Technologies
There is a common misconception that measuring displacement using an accelerometer is not possible or can lead to erroneous information. In reality, accelerometers have long been used to measure displacement.
Reading accelerometer specifications - Wilcoxon Sensing Technologies
divide the value (c) by the sensitivity (in V) of the sensor. The resulting number is a good approximation of the maximum amplitude signal (expressed in g’s) that may be measured before distortion occurs. The frequency response describes the maximum deviation of sensitivity over a frequency range.
Test Apparatus Design for Assessment of Techniques Used to ... - PCB
Additionally, the false negative transducer pressure response occurs shortly after the beginning of the positive pressure reading, making it impossible to isolate the negative error signal.
Protimeter Dual-Function Moisture Meter
Conductive material such as salts, carbon and metal can give false positive readings. if the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
Test Report - Ardent Concepts
When the DUT pins terminate in an open circuit, a capacitance measurement results. When a short circuit compression plate is used, inductance can be determined. Time domain measurements are obtained via Fourier transform from VNA tests.
The Most Common Applications for a Passive Lowpass Filter
Passive lowpass filters assist in the process by eliminating unwanted noise from radars, enabling them to differentiate targets from false signals. It ensures accurate radar operations in both ground-based and airborne systems.
UNDERSTANDING TORQUE-ANGLE SIGNATURES OF BOLTED JOINTS - PCB
Torque-angle curve analysis is known to be one of the most basic and practical methods of determining not only what the fastener went through during the tightening process, but also the integrity of the joint itself.
How to Use a Protimeter Moisture Meter | User's Guide
By operating the Temp Diff function, the operator will be able to determine if surfaces are colder than the surrounding air temperature, creating condensation.
Instruction Manual Amphenol - Protimeter
Readings from moisture meters are not definitive but are used to help a professional make informed judgment to the material’s moisture condition. Conductive material such as salts, carbon and metal can give false positive readings.
PCB LOAD & TORQUE: A PCB GROUP COMPANY Load Cell Handbook
This handbook is intended to be a guide for test engineers, lab managers and test technicians who use load cells for test and measurement applications for dynamometer testing, hydraulics testing, and suspension and transmission testing, to name a few.
Frequently Asked Questions | Protimeter Moisture Meter Function
Protimeter non-invasive meters have a 0-1000 relative scale. What does this mean? Non-invasive mode (Search Mode) is used to find higher than normal moisture levels. Pin mode is then used to more accurately measure the moisture level once you have found it.
Vibration monitoring FAQs - Wilcoxon Sensing Technologies
Electromagnetic interference can produce false signals at the sensor's output. Very high frequency electromagnetic interference can cause intermodulation distortion and produce low frequency measurement errors.
FASTENER TESTING SYSTEMS - PCB
Many factors must be considered when establishing a threaded fastener bolted joint analysis program, which should include methods for modeling the joint, determining torque-tension characteristics and friction coefficients, and experimental testing of components and assemblies.
AEROSPACE GROUND TEST - PCB
Ground testing of a new aircraft design or an aircraft that has undergone significant structural modification, is a prerequisite before any flight-test program can begin.
Impact Hammers | PCB Piezotronics
Each PCB® Modally Tuned®, ICP® instrumented impact hammer features a rugged, force sensor that is integrated into the hammer’s striking surface. “Modal Tuning” is a feature that ensures the structural characteristics of the hammer do not affect measurement results.
Tightening Strategies for Bolted Joints - PCB
Combining basic material strengths and friction coefficient information has lead to development of a powerful method called Torque-Angle Signature Analysis. This method provides valuable information on joint strength and performance when applied to testing fasteners in bolted joints.