Search Results for induced drag
TN-31 Air Blast and the Science of Dynamic Pressure Measurements - PCB
2 Figure 3 shows the reflection of strong shock waves from a reflective surface. I1, I2, and I3represent the expanding shock wave, while the "R" contours represent the respective reflections from the surface.
TN-23 Pyroshock Explained - PCB
environment of pyroshock. Specifically, it (1) defines pyroshock, (2) identifies those situations where pyroshock can induce equipment failure, (3) explains the response of structural systems to pyroshock, and (4) discusses uniqueness in the shock spectra (see PCB® Tech Note 19) .
Acceleration Sensing Technologies for Severe Mechanical Shock - PCB
These devices include explosive bolts, separation nuts, pin pullers and pushers, bolt and cable cutters and pyro-activated operational hardware, flexible linear shape charges (FLSCs), mild detonating fuses (MDFs), explosive transfer lines, V-band (Marmon) clamps, and more.
Sensor selection guide - Wilcoxon Sensing Technologies
Vibration analysis is used as a tool to determine machine condition and the specific cause and location of machinery problems. This expedites repair and minimizes cost. This technical note will cover the important factors to consider when choosing a vibration sensor.
Dynamic Strain Sensors and Accelerometers for Structural Testing
Quartz force sensors are recommended for dynamic force applications. They are not used as 'load cells' for static applications. Measurements of dynamic oscillating forces, impacts, or high-speed compression/tension un-
RF Interconnects - SV Microwave
The Humboldt RF interconnect platform allows users to design their own harnesses using SV’s online drag-and-drop multiport builder quickly and intuitively.
Dualok High-Vibration Connectors - Amphenol Aerospace
Dualok is an enhanced anti-decoupling mechanism designed to perform under severe vibration environments – far exceeding the performance of MIL-DTL-38999 Series III plugs.
MEMS Shock Accelerometers - PCB
For MEMS (Micro-Electro-Mechanical-Systems) piezoresistive (PR) shock accelerometers, the two main cable concerns are signal modification due to: (1) additive triboelectric noise generated within the cables and/or (2) unknown or unaccounted for electrical impedance characteristics of the cable.
LÜTZE SUPERFLEX® Plus put to the test under harsh conditions
LÜTZE SUPERFLEX® Plus cables were originally designed to be used in fast moving machine applications, such as c-tracks, in automated manufacturing systems. The superior performance of LÜTZE SUPERFLEX® Plus cables shows their versatility in many other applications as well.
Sensing Technologies used for Accelerometers | PCB Piezotronics
PCB Piezotronics utilizes a number of transduction techniques when designing accelerometers including piezoelectric, piezoresistive, and capacitive. The Piezoelectric Effect is an inherent, or induced property of certain crystals.
VFD: INSTALLING CABLE THAT POWERS AND PROTECTS - TPC Wire
VFDs, or Variable Frequency Drives, are electronic controls used to adjust the speed of AC motors. To facilitate controlling motor speed, the drive converts incoming AC power into a DC component, and then inverts the DC component to an AC output.
Introduction to Piezoelectric Industrial Accelerometers - PCB
Accelerometers are piezoelectric devices, that is, the primary sensing element is a piezoelectric element constructed in such a way that when stressed by vibratory forces, a proportional electrical signal is produced. Some materials are found to be naturally piezoelectric.
Measuring Static Overpressures in Air Blast Environments
One cause can be unstable chemical compounds rapidly transforming themselves at a site to a more stable form with a resultant release of energy. This energy transformation results in gas formation (pressure) and intense heat. While chemical explosions are the most.
Introduction to MEMS Accelerometers | PCB Piezotronics
MEMS stands for micro electro mechanical system and applies to any sensor manufactured using microelectronic fabrication techniques. These techniques create mechanical sensing structures of microscopic size, typically on silicon.
REVIEW OF THE APPLICATION OF DESIGN GUIDELINE VDI 2230 - PCB
In the Guideline VDI 2230 Part 1, bolted joints are treated which have to transmit constant or alternating working loads and which are designed with high duty bolts. A bolted joint is a separable joint between two or more components using one or more bolts.
Tightening Strategies for Bolted Joints - PCB
Frictional drag on the shank or threads due to misalignment of parts, chips or foreign material in the threads as well as unintended interference due to out of tolerance threads are additional causes of prevailing torque in the rundown zone.
Introduction to Air Blast Measurements - Part V: Alternate Technologies?
Heat transfer by conduction, convection, and radiation results in the individual strain-elements of the pressure transducer’s diaphragm encountering spatially distributed temperatures. These temperatures change with time and are different than that of their supporting structure.
Magnet Mounting Techniques for Machinery Vibration Monitoring - PCB
cle discusses magnet-mounting techniques for accelerometers. These techniques allowed Praxair, Inc., a leader in the air separation and purification industry, to institute a company-wide vibration data acquisition and analysis system that monitors machinery health at several hundred Praxair facilities across North Americ.
Variable Capacitance MEMS Accelerometers | PCB Piezotronics
Variable capacitance MEMS (VC MEMS) accelerometers are DC-response sensors for measuring low frequency vibration, motion (constant acceleration) and tilt. Micro-Electro-Mechanical Systems (MEMS) technology is the backbone of VC accelerometers.
THREADED FASTENER DESIGN AND ANALYSIS - PCB
frictional drag on the shank or threads due to the misalignment of the parts, to chips or other foreign material in the threads, or due to out of tolerance threads with unintended interference. The nonlinear alignment zone is a complex function of the process of drawing together of the mating