Vibration testing is continuously evolving throughout time. The requirements of testing large and heavy devices demand shakers with larger sizes and higher force ratings. On the other hand, with the increase of size and force ratings comes the cost of lowering the usable frequency range of a shaker system. Shakers with 50,000 lbf force typically operates up to 2 kHz. Larger shakers can have usable frequency ranges of less than 1.5 kHz. The main reason for this frequency reduction in performance is that higher force requires larger armature, and this results in a lower first resonance frequency, thus reducing the useful shaker frequency range. Intuitively, the larger the shaker, the higher the price tag.Read More
Noise Criteria (NC) curves are primarily used to rate indoor noise levels. It is important that the background noise levels are within acceptable limits to ensure optimal speech communication for structures ranging from residences and offices to hospitals and schools.Read More
The Stability Diagram is an effective way to display and identify the modes of a structure under test. Nowadays, the Stability Diagram is the standard method for the modal parameter identification stage. It provides a graphical representation of the system's poles (modes) at different mode orders during the modal parameter identification stage.Read More
Crystal Instruments and Sentek Dynamics presented products and solutions for environmental vibration testing at 32nd Small Satellite Conference in Logan, Utah.Read More
Crystal Instruments (CI) is proud to announce an agreement with MotionTech LTD (located in Moshav Ein Vered, Israel) for the distribution of our products in Israel.
MotionTech was established by experts from the test, experiment, and measurement world from the defense and military industries. MotionTech professionals have knowledge regarding high performance acquisition systems and vibration systems. They are highly experienced in consulting and preparing tailored solutions according the needs of the customer. MotionTech offers highly advanced technological solutions in the test, measurement, communications, security and defense industries. Applications covered include: drop test, automotive test, aerospace, shock and vibration, impact testing, etc,.Read More
The Ethernet based network structure of Crystal Instruments Spider Systems provides the maximum flexibility and scalability for the configuration of test and measurement instruments in the lab environment. With the implementation of IEEE 1588 Precision Time Protocol (PTP), the same Ethernet connection used for data transmission also provides time clock synchronization. This advanced technology is applied to CI Spider systems, ensuring the possibility of nearly any topology of device and computer connections. In theory, the user will be able to access the test instruments on the network at any time and any distance, with electrical physical limitations as their only limit.Read More
A new software release of EDM 7.1 is now available from Crystal Instruments. This new updated version of Engineering Data Management Software (EDM) provides users with convenient improvements and enhancements to the vibration control software (VCS). EDM 7.1 also supports the elegant and powerfully updated new versions of Spider hardware.Read More
Crystal Instruments (CI) is proud to announce that we reached an agreement with Alava Ingenieros (locations in Madrid, Barcelona, Zaragoza and Lisbon) for the distribution of our products in Spain and Portugal.
Álava Ingenieros – Grupo Álava has been providing high technology solutions since it was founded in 1973. The company focuses on the following technological fields: sensors, data-acquisition, predictive maintenance, calibration, testing, security, communications, imaging, photonics and nanotechnology, and environmental, marine and terrestrial technologies. They provide value-added services such as technical advice, integration, configurations, commissioning, training, support and post-sales service. Álava Ingenieros seamlessly connects manufacturers, systems integrators and end-users to provide technology that contributes to social development.Read More
Summertime…birds chirp in the warm early mornings, crickets sing late into the evening haze, and the Vibration Institute holds their Annual Training Conference and Expo! This year’s exhibition was hosted by VI as well as Reliabilityweb.com, the world’s most trusted source of the latest reliability and uptime maintenance news and information in the Predictive Maintenance and Reliability Industries. As organizers of the expo, they even hosted numerous interesting live-streamed interviews with industry professionals right on the exhibit floor.Read More
Stability is an important part of ensuring operability of power generation systems. Large transients can cause power systems to become unstable and can eventually lead to blackouts. Power systems need to be designed to withstand large disturbances and maintain stability under changing operating conditions. Devices such as the generator automatic voltage regulator (AVR) and power system stabilizer (PSS) are widely used to manage these system instabilities. These control devices can be attached to power generation systems to help improve stability.Read More