Stress Analysis Services - RSS News Feed

Wire Free Strain Measurement Device

Thu, 15 Sep 2011 09:07:25 -0400

SAS now reps Direct Measurements, Inc. (DMI) - a manufacturer of wire free sensors & portable devices used to optically measure strain. Applications include structural health & component R&D in aerospace, automotive, civil infrastructure, & energy systems.

Fiber-optic Strain & Temp Measurement

Thu, 15 Sep 2011 09:01:59 -0400

SAS is now reping Luna Technologies, manufacturers of the ODiSI (Optical Distributed Sensor Interrogator) instrument, a new instrument that provides fully distributed strain or temperature measurements, delivering an unprecedented amount of data by using optical fiber as a continuous sensor.

Energy Harvesting Devices for Sensors

Thu, 15 Sep 2011 09:25:47 -0400

MicroStrain, Inc is a leader in adaptive energy harvesting electronics for wireless sensor networks. Their innovative energy harvesting technologies enable ambient energy sources to power wireless sensor networks for the long term, without the need for battery replacement, using sophisticated harvesters for energy conversion.

New collarless shaft telemetry system, no batteries

Thu, 15 Sep 2011 08:52:01 -0400

Accumetrics introduces the AT-4500 EasyApp - Kevlar strap-mounted induced power telemetry system for <10" shafts. 16-bit resolution, 26484 s/s. DC to 2kHz bandwidth, 85C rated transmitter, DC coupled signal input from 350 or 1000 ohm* full bridge strain gages or piezoelectric sensors

High Frequency Accelerometer for Aerospace Flight Testing

Thu, 15 Sep 2011 08:49:07 -0400

Dytran introduces the 3236A, a new piezoelectric accelerometer designed for Health & Usage Monitoring Systems (HUMS) & aerospace flight testing applications of both commercial and military aircraft. Model 3236A is a ring-style IEPE accelerometer. Operating temperatures up to +300°F (+149°C).

Be VIC's guest at Assembly Tech Expo

Thu, 15 Sep 2011 08:42:09 -0400

See a demo of VIC-Torr, the latest Mass Flow/Pressure Decay product from VIC's Air Leak Technology Div. Regisiter w/ promo code XG at www.aatexpo.com

Top 10 Vibe Test FAQs & Answers

Tue, 14 Jun 2011 16:53:40 -0400

Join us for a Webinar on June 30 as Andy Cogbill, Lead Support Engineer at Vibration Research, discusses the top 10 frequently asked questions about VR controllers. FAQs about hardware, software, setup and configuration will be addressed. This is one webinar you won't want to miss! Title: Top 10 FAQs & Answers Date: Thursday, June 30, 2011 Time: 10:00 AM - 11:00 AM EDT

Vishay Precision Group Mourns the Loss of Dr. Felix Zandman

Mon, 6 Jun 2011 11:39:22 -0400

Vishay Precision Group, Inc. (“VPG”) VPG announced today, with great sadness, the passing of Dr. Felix Zandman, the inventor and founder of the foil technology upon which the VPG business is based. Dr. Zandman, who was 83 years old, was also the founder and Executive Chairman of the Board of Vishay Intertechnology, Inc. (“Vishay”) VSH. VPG was successfully spun of from Vishay in 2010 and Dr. Zandman served as an R&D consultant to VPG after the spinoff.

Vacuum Instrument Corporation offers free registration to SEMICON West 2011!

Mon, 6 Jun 2011 10:04:34 -0400

Be sure to visit Vacuum Instrument Corporation at SEMICON West 2011, July 12-14 at the Moscone Center in San Francisco. We'll be featuring our full line of advanced leak detection equipment. Register now for free registration to SEMICON West 2011, courtesy of Vacuum Instrument Corporation (a $150 value) and be sure to visit us in booth 6360.

Attend "PhotoStress® Plus and FEA Correlation"

Sun, 5 Jun 2011 19:56:26 -0400

PhotoStress® is a visual, economical, & time proven stress analysis technique. This seminar will demonstrate how to produce a safe & reliable structure in less time at lower cost; validate & build more confidence in your FEA analysis; immediately identify weak links that would lead to stress failure; & quickly recognize over-designed areas.

Cost: $49 - Includes lunch Payable via Credit Card or PayPal

When: Tuesday June 21, 2011 9:30 AM to 2:30 PM EDT

Where: Oakland University 2200 North Squirrel Road Science & Engineering Building Building 6 - Room 376 Rochester, MI 48309

Accumetrics introduces the world's first rugged, easy-to-apply, battery-free telemetry system

Wed, 10 Nov 2010 11:38:08 -0500

Until now, engineers who wanted to rapidly deploy a telemetry system on rotating shafts have had to choose between ease of installation, but with battery power, or a difficult mechanical installation with possibly limited range of allowed shaft movement, but with the convenience of battery-less induction power.

Accumetrics new AT-4500 puts an end to these choices. The AT-4500 is a high performance, induction-powered wireless telemetry system that can be quickly attached to a shaft with a Kevlar® strap for long-term torque or RTD measurement with 16-bit resolution. The Kevlar® strap mounting allows fast setup, and re-use of the transmitter on multiple shaft diameters by use of different straps. The tough packaging can be operated in rain, ice, mud, and other dirty or corrosive environments, with input connections easily protected from the environment by use of a sealable front cover plate. The induction power allows long term automotive use without the need for battery replacement.

The system is a wireless design; unlike slip rings, it does not use bearings or sliding contacts. Inductive power eliminates the need for battery changes during long-term monitoring. The system will operate at radial distances of several inches away from the stationary loop diameter for typical auto / truck half and prop shaft diameters.

Applications: Automotive and marine driveshafts, very large generator shafts (> 20" diameters at 4320 RPM), dynamometers, industrial drive process monitoring, torsional vibration testing, and replacement of in-line torque transducers and slip rings.

Mounting the transmitter: The AT-4500 EasyApp telemetry system is applied through use of Kevlar® straps that are sized for specific shaft diameters. The transmitter requires only 1.9 inches axial length, and less than 1.4" of radial clearance are needed for a 4 inch prop shaft (1.25" clearance is needed for a 2" shaft). A Kevlar® strap provides fast and rugged attachment to the shaft by use of counter-weighted yokes (tightened by 10-32 screws). The standard Kevlar® straps are rated for 3000 pound pull strength. Also available are high strength 10000 pound pull strength straps (these are typically used for large diameter high speed shafts, as found on 3600 RPM 20 inch and larger generator shafts).

Connecting input to the transmitter: A cutout in the front seal area allows strain gage wiring to pass from the shaft and into the base of the EasyApp housing. The wiring can be soldered to a removable connector, which will mate to a socket in transmitter module under the front cover. RTV silicone sealant is used to seal the wire access gap in the cover.

Mounting the Stationary Loop Antenna and Tuning Enclosure:
A stationary loop antenna is needed to provide wireless induction power. This antenna can be supplied in a convenient ¼" copper tubing form, or may be provided via a machined phenolic split antenna. The copper tubing antenna design allows easy re-use by substituting different rigid tubing circumferences. The stationary antenna base will connect to a tuning assembly (4" x 4"x 2.5" typical) that is either incorporated into the base of the antenna, or is mounted a short distance away. The tuning enclosure connects via coaxial cables to the remote receiver. (The cabling length can be varied; it is not tuned.)

System Operation:
The AT-4500 EasyApp uses a stationary loop antenna to provide the induction power provided from the receiver that is required to both excite a strain gage bridge or RTD sensor and to power the AT-4500's rotating transmitter electronics. The torque signal produced by the sensor on the shaft is amplified, anti-alias filtered, and digitized on the rotor. The resulting high precision/low noise digital data is transmitted off the rotating shaft to the pickup antenna and receiver. The receiver converts the digital data to an analog voltage output that can be fed to any user's data acquisition system. The result is a system that produces superb data quality with high EMI immunity. Signal bandwidths are available up to 8.3 kHz (digitized at 26484 samples per second), with AC or DC input coupling. The standard system anti-aliased system bandwidth is DC to 2 kHz.

Vist the Accumetrics website: http://www.accumetrix.com

New Accelerometer for Aircraft Vibration Monitoring, Model 3309A

Wed, 10 Nov 2010 10:29:07 -0500

Dytran has released a new piezoelectric accelerometer designed for vibration monitoring on both commercial and military aircraft. Model 3309A is a ring-style charge mode accelerometer, and is capable of operating at temperatures up to +482°F (+250°C). The ability of the 3309A to operate under high temperatures, coupled with a high natural frequency, makes this unit ideal for engine vibration monitoring and various types of high-performance engine analysis.

Model 3309A is offered with a sensitivity of 5 pC/g and utilizes quartz, shear technology. It is hermetically sealed for reliable operation within high-humidity and dirty environments, as well as case-isolated to avoid annoying ground loop interference. Case ground isolation is achieved by internally isolating the accelerometer element from the outer housing.

This accelerometer features a radial 3-pin "Mighty Mouse" connector, as well as a miniature through-hole design which allows for the sensor to be turned 360 degrees prior to securing, aiding the user during sensor installation.

Priced at $535.

Key Features:

+482°F (+250°C) operation
5 pC/g sensitivity
Weighs 25.5 grams
"Mighty Mouse" 3-pin connector
Through-hole mount
Hermetically sealed
Case isolated
Stainless steel construction
Charge mode
Potential Applications:

Aircraft vibration monitoring
Engine vibration monitoring
High-performance engine analysis

Visit on the Dytran website: www.dytran.com

Miniature Teardrop High Temperature Accelerometer, Model 3310A

Fri, 24 Sep 2010 16:07:47 -0400

Dytran Instruments has introduced a new high-temperature sensor, model 3310A, which is a low-profile, charge mode accelerometer that was designed for use in Environmental Stress Screening (ESS) and mechanical shock testing applications where small size and temperature range are critical.
Model 3310A weighs just 1.8 grams and has an upper temperature range of +500°F (+260°C), making it unique in both size and operating temperature. The 3310A utilizes a Lithium Niobate (LINbO3) sensing element, which ensures greater temperature stability over a wider temperature range.
Designed in a lightweight titanium packaging, model 3310A also features a miniature teardrop design, base isolation and hermetic sealing for reliable operation in high-humidity environments. With a sensitivity of 1.2 pC/g and adhesive mount, the 3310A has a special Dytran designed 3-56 coaxial connector which mates with a replaceable cable, model 6003A03 (supplied). This coaxial cable has a 10-32 coaxial jacket at the end.
The 3310A is also ideal for PC board vibration measurements, product response testing, and general purpose high-temperature vibration measurements where space is at a premium. Priced at $551.
* Miniature, teardrop design * High operating temperature, +500°F (+260°C) * 1.2 pC/g sensitivity * Weighs just 1.8 grams * Removable cable * Adhesive mount * Hermetically sealed * Base isolated * Charge Mode
Potential Applications: * Environmental Stress Screening (ESS) * Mechanical shock testing * PC board vibration measurements * Product response testing * General purpose high-temperature vibration measurements where space is at a premium
http://www.dytran.com/img/products/3310A.pdf

Portable Strain Gauge or Load Cell Indicator (PSD232) from Mantracourt

Tue, 17 Aug 2010 09:04:29 -0400

Mantracourt’s PSD portable strain gauge or load cell handheld indicator has been used for many years by customers worldwide as a simple wired solution for monitoring the output from load cells.

A lesser known relative is the PSD RS232 version which enables the handheld indicator to connect to any RS232 interface whether it’s a PC or simple data logger.

The PSD232 sends the displayed value to the RS232 port at 9600 baud in an ASCII format, terminated by a carriage return and line-feed making it suitable for stand alone data loggers, larger serial displays as well as interfacing onto a PC for logging which can provide a useful record during a calibration or load cell test.

The RS232 output is provided at the same time that the display is updated which depends on how the PSD has been set up by users. Updates rate of up 10Hz can be set.

Dytran Introduces Variable Capacitance Accelerometers with Piezoresistive Electrical Interface, 7600B Series

Thu, 12 Aug 2010 17:12:16 -0400

Dytran Instruments has just released a new technology of high performance, variable capacitance (VC) accelerometers. The 7600B series is a family of DC response accelerometers which were designed to directly replace piezoresistive units in new or existing applications.

The 7600B series accelerometers utilize a capacitive sensing element and an advanced ASIC to simulate the operation of a piezoresistive bridge. It combines an integrated VC accelerometer chip with high drive, low impedance buffering for measuring acceleration in aerospace, automotive, commercial and industrial environments.

These accelerometers are tailored for zero to medium frequency instrumentation applications. The module contains a hermetically sealed micro-machined capacitive sensing element, a custom integrated circuit amplifier, and differential output stages. It's hermetically sealed titanium case has a M4.5 X 0.35 4-pin receptacle, and is easily mounted via two 4-40 screws.

On-board regulation is provided to minimize the effects of supply voltage variation. It is relatively insensitive to temperature changes and thermal gradients. The cable shield is electrically connected to the titanium case, and the power and signal wires are isolated from the case.

The unique benefit of the 7600B series is that while they utilize variable capacitance technology, they are powered with the same power supply as piezoresistive and strain gage sensors. These units can also operate as standalone VC accelerometers with differential output or be used in place of piezoresistive, bridge type accelerometers.

The 7600B series of accelerometers responds to both DC and AC acceleration. Typical applications in which they can be used include crash testing, air bag testing, ride quality, flight testing and seismic monitoring.

Priced at $775.
Key Features:
+ Power supply is identical to piezoresistive and strain gage sensors
+Available in ranges of 5g to 200g
+4-pin connector
+4-40 mounting
+Hermetically sealed
+Differential mode
+Variable capacitance technology
Potential Applications:
+Air bag testing
+Crash testing
+Flight testing
+Ride quality
+Seismic monitoring

Please visit the Dytran website for more information: http://www.dytran.com

MISTRAS introduces Automated "Mini-Scanner" for Pocket-UT

Tue, 3 Aug 2010 13:40:33 -0400

The innovative Pocket UT now has a new companion. MISTRAS has developed a fully automated Mini-Scanner to team up with the Pocket UT in order to inspect flat plate or pipe down up to 3 inches in diameter with inspection scanning speeds as high as 6 inches per second and an indexing/crawling speed of 2 inches per second. The Mini Scanner features magnetic wheels and is at home scanning vertically or even upside down. The complete kit includes the Mini Scanner, 2-axis power supply, all umbilical cabling for power and water, and UT connectors to the Pocket UT™, optional transducers, bubblers and TOFD (Time- Of-Flight-Diffraction) wedges. This Mini-Scanner can also be adapted to our UltraPAC systems.

Dytran Introduces New Miniature Triaxial IEPE Accelerometers

Sun, 18 Jul 2010 21:11:41 -0400

Dytran Instruments has designed another series of miniature triaxial accelerometers, the 3313A and 3313AH series. These units are triaxial in configuration yet weigh just 4.1 grams.

The 3313A features integral electronics (IEPE) and has a frequency range of 1.2 to 10,000 Hz, making them an ideal solution for a variety of test and measurement applications. They are fully welded in a titanium housing and hermetically sealed, with a 1/4-28 2-pin connector and 10-32 stud mount.

These sensors are available in three ranges, between 500g and 5,000g. The 3313A operates at temperatures up to +250°F (+121°C). The 3313AH series is a higher temperature accelerometer, and can operate at temperatures up to +325°F (+162°C). The 3313AH series performs reliably in a variety of applications where higher than normal temperatures are encountered.

Designed for us in modal analysis and environmental stress screening (ESS) applications, the 3313A and 3313AH are also versatile enough for NVH applications on engines and HALT / HASS chambers, or on critical flight test applications.

The 3313A is priced at $949 and the 3313AH is $1,087.

Key Features:
. Miniature, triaxial design
. Available in sensitivities of 1 mV/g, 5 mV/g and 10 mV/g
. 1/4-28 4-pin connector . 10-32 mounting stud
. Hermetically sealed
. Frequency range of 1.2 to 10,000 Hz ( ±10%)
. High temperature option available (+325°F)
. IEPE

Potential Applications:
. Modal analysis
. ESS
. HALT / HASS testing
. NVH applications
. General purpose triaxial vibration measurements

http://cms.dytran.com/eme/files/273/3313A%20Series.pdf
http://cms.dytran.com/eme/files/273/3313AH%20Series.pdf

MicroStrain's Energy Harvesting Product Wins "Best of Sensors Expo" Award

Mon, 28 Jun 2010 21:19:24 -0400

On June 8th, MicroStrain was awarded the Silver Award in the Sensors category for the EH-Link. Sensors Magazine presents the "Best of Sensors Expo" awards to honor the most exciting new products on display at the Expo. Follow this link to a video of MicroStrain President Steve Arms demonstrating the EH-Link at Sensors Expo: http://bit.ly/bCO2hX

Vacuum Instrument Corporation Introduces VIC-TORR

Tue, 23 Mar 2010 21:55:19 -0400

NEW PRODUCT from Vacuum Instrument Corporation: VIC-TORR Mass Flow, Pressure/Vacuum Decay System.

VIC-Torr is a high resolution test instrument that can be configured as a Mass Flow, Pressure Decay or Vacuum Decay leak tester and is available in single or multi-channel versions. The robust color LCD touch screen makes it easy for the operator to determine if a test product is pass/fail.

VIC-TORR has provisions for Ethernet, USB and RS-232 communications capability for downloadable selection and to upload data. Other features include automatic set up, a multi-language display and user friendly programming and diagnostics.

More on VIC-TORR: http://www.vicleakdetection.com/PDF/VICT.pdf

Capacitec exhibiting at SEM Conference & Expo

Fri, 12 Feb 2010 12:29:47 -0500

Capcitec, global leaders in non-contact capacitive displacement measure witll exhibit at the 2010 SEM Annual Conference & Exposition on Experimental and Applied Mechanics:
Experimental Mechanics of High Performance Systems Crowne Plaza Hotel & Conference Center at Historic Union Station Indianapolis, Indiana USA June 7 - 10, 2010
For registration information visit: http://www.sem.org/CONF-AC-TOP.asp

Vibration Control Training Seminar in March!

Fri, 12 Feb 2010 10:04:16 -0500

Vibration Research Corporation has scheduled a Training Seminar at Vibration Research headquarters (Jenison, Michigan) on March 9 & 10, 2010. Don´t miss out on this opportunity to learn more about vibration control. These courses will help you and your lab become more efficient and knowledgeable in the vibration test world. Keep ahead of your competition by learning and using the latest technology available! The cost is $695 per person, and additional attendees from the same facility may attend for $300 each. You may register online or by calling Vibration Research at 616-669-3028. Class size is limited, so we encourage you to register early.

SEMINAR LOCATION Vibration Research Corporation 2385 Wilshere Drive, Suite A Jenison, MI 49428 35 min from Grand Rapids Airport (GRR)

SAS exhibiting at MI-TEST Instrumentation Show

Mon, 8 Feb 2010 12:46:09 -0500

SAS will exhibit in the MI-TEST Instrumentation Show, Wednesday, May 12, 2010. Location: Embassy Suites, Livonia, MI

SAS exhibiting at IRIS Show!

Sun, 7 Feb 2010 14:37:44 -0500

SOUTHWEST OHIO INSTRUMENT SHOW May 11, 2010 9:00 a.m. to 3:00 p.m. Kings Island Resort Inn Mason, OH