Test & Measurement

Selecting the Right Material for 3D Printing

This industrial 3D printing white paper explores the properties of thermoplastic and metal materials available with direct metal laser sintering, selective laser sintering and stereolithography technologies. It also includes a quick-reference guide of material attributes that can steer you toward the proper grade. Download your free copy today!

Posted in: White Papers, Electronics

Read More >>

NASA Measures Raindrop Sizes from Space

For the first time, scientists have three-dimensional snapshots of raindrops and snowflakes around the world, thanks to the joint NASA and Japan Aerospace Exploration Agency Global Precipitation Measurement (GPM) mission. With the new global data on raindrop and snowflake sizes, scientists can improve rainfall estimates from satellite data and numerical weather forecast models.

Posted in: News, Measuring Instruments, Monitoring

Read More >>

A Brief History of Modern Digital Shaker Controllers

Over a period of 40 years, four generations of digital vibration exciter control systems have been developed by various companies in the USA. They are categorized as standalone, PC-based, PC-tethered, and fully networked. This paper discusses the evolution and improvement of shaker controllers and the critical parameters that users should consider during the acquisition process.

Posted in: White Papers

Read More >>

Force Transfer Machines

There has been ongoing debate as to whether or not a hydraulic force machine that applies the force simultaneously to both the reference standard and the unit under test is more repeatable and reproducible when the force is applied and transferred with 3 bars versus 2 bars. The debate centers around alignment of the reference standard and the unit under test. There is no disagreement about the benefits of using a triangular configuration when using multiple load cells to weigh an object; however, there is a debate over any advantages that might be offered by using a 3 bar Universal Calibrating Machine (UCM) instead of a traditional 2 bar system. This paper provides test results for repeatability and reproducibility for a 2 bar UCM and a 3 bar UCM, showing the null hypothesis to be correct and proving that there is not a difference between either type of UCM.

Posted in: White Papers

Read More >>

Full RF Signal Chains from 0 Hz to 110 GHz

Analog Devices (ADI) has expanded its RF capabilities in the full signal chain, including companion products, in the full bandwidth from 0 Hz to 110 GHz.This white paper provides examples of the wider frequency spectrum covered by ADI, and explains that true DC is important. Off signal chain performance is also critical, and this paper shows how low-noise, high-stability control and power components are important to overall RF signal performance.

Posted in: White Papers, Electronics, Data Acquisition, Sensors

Read More >>

Basics of Electric Heaters

Hotwatt has manufactured specialized electric heating elements for over 64 years, all made in the USA. Products include cartridge, air process, immersion, strip and finned strip, tubular and finned tubular, band, compressor crankcase, foil, flexible rope and ceramic heaters. We are a quality supplier to OEM's in the in industrial, medical, commercial appliance, packaging, instrumentation, aviation, transportation and military fields.

Posted in: White Papers, White Papers, Electronics

Read More >>

Computer Aided Design of Suspension Mechanisms

Automobile suspension mechanisms have to date been designed using two-dimensional graphic oriented methods. Computer-aided design has allowed many two-dimensional mechanisms to be designed much more accurately. However, this has not translated to suspension mechanisms because these mechanisms are not two-dimensional but instead three-dimensional.

Posted in: White Papers, Electronics & Computers

Read More >>

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.