Element’s structural dynamics testing services provide reliable, consistent data to the world’s most critical industries. From aerospace to construction, we help ensure that your products are fit for use, no matter what the application.
Structural Dynamics Test Methods
Our structural dynamics testing methods focus on evaluating components in high-stress, high-performance environments. Combining multiple test methods, we create a single, comprehensive program that ensures product safety while saving you time and money. Element’s experts work with you to design the ideal test regime for your components and products, in every stage of your component lifecycle.
For more information about our structural dynamics testing services, or to receive a quote, contact an expert today.
Acceleration & Spin Testing
Element's high-powered acceleration and spin testing services evaluate the effects of increasing gravity load on products and components.
The stresses placed on a material or product when subjected to increasing gravity load can be catastrophic. Acceleration loads can cause structural problems such as deflection, fastener or hardware failure, and problems with flow and pressure regulation.
We have a range of centrifuge systems to subject products to increased g loading. Some of our acceleration testing capabilities include:
- Forces up to 11400 Kgf
- Frequencies from 5 – 3,000 Hz.
- Hydraulic Shaker up to 4500 Kgf
- Payloads up to 1600 kg
Like disks and blisks, rotating components in aero engines are highly sensitive in terms of aircraft safety –failures can result in hazardous or even catastrophic effects. For this reason spin testing becomes an indispensable part of aero engine development.
Using our extensive range of facilities can test most rotating components of aero engines, turbine compressors, turbochargers and blowers under realistic conditions using highly sophisticated spin test rigs.
- Our spin testing capabilities include:
- Temperatures ranging from -40C to 1000C
- Speeds from 24,000 – 200,000 RPM
- Components up to 2500kg
- Generation of 3D temperature gradients by special oven technologies
- Multi-channel telemetry systems
- Permanent vibration monitoring
- Crack detection and crack growth monitoring at rotating specimens
- High-speed cameras
High Cycle Fatigue & Low Cycle Fatigue
Our high cycle fatigue (HCF) and low cycle (LCF) labs specialize in service life limit analysis. Using a variety of control and reporting techniques, our experts produce critical data for components across industries.
High-level vibration and extended stress can degrade the structural integrity of a product, making high-cycle fatigue and low-cycle fatigue a crucial part of material and product qualification programs. Our equipment allows us to test over a wide range of frequencies in short periods of time, simulating a components' service life and environmental stressors.
Some of our capabilities include:
- Strain gauge calibration
- Specimen sizes from standard bars to full-size fan blades
- Frequencies up to 20kHz
- Temperatures up to 1200°C
- Force-controlled and strain controlled programs
- Open-hole fatigue testing
- Tension-tension fatigue testing
- Tension-compression fatigue testing
Vibration, Shock & Drop Testing
From sudden impact to everyday use, our vibration, shock and drop testing capabilities simulate years of use for components in critical industries.
Vibration testing simulates the conditions that a product or structure might see during its lifetime while under a test environment. Vibration testing can be used to ensure that products are robust and perform safely during operation or transit, avoiding unexpected performance or early life failure in the field.
The vibration testing methods we perform include:
- Resonance Search & Dwell
- Narrow Band Random on Random
- Sine-on Random
- Combined Temperature and Vibration
- Helicopter Rotor Frequency Simulation
- Gunfire Simulation
- Blade-off vibration (engine fan blade loss and windmilling)
Drop & Shock Testing
Shock testing is used to measure the impact of sudden acceleration caused by explosion, drop, or collision. Our labs perform shock testing to prepare products for harsh industrial, transportation and military environments. Using an accelerometer to calculate speed and force, components are subjected to loads up to 50,000 g for less than one second. Our labs then evaluate the product for damage and stress, and to ensure that it can meet the demands of its work environment.
Some of our shock testing capabilities include:
- Operational shock and crash safety
- Gunfire simulation
- Classical shock (half sine and saw tooth testing)
- Decaying sine wave testing
- Bump testing
- Impulse testing
- Drop testing
- Impact testing
Seismic testing is designed to assess the performance of safety-critical equipment and structural systems by subjecting them to strong ground shaking such as that resulting from earthquakes or nearby railways, airports, power plants and other possible causes of movement or vibrations.
Element helps manufacturers to understand and meet the seismic qualification requirements, of which are often specific to a project, industry or sector. Our seismic testing and certification services ensure that a product will continue to perform without loss of function under the most extreme vibration conditions, making them essential for nuclear equipment manufacturers of safety-critical systems and components.
Our seismic testing program includes:
- Test plan and strategy creation
- Fixture design
- Exploratory Testing
- Single Axis Testing
- Biaxial Testing
- Triaxial Earthquake Testing
- Qualification Documentation
The complex stressed that occur during the operation of structures must be examined under static and dynamic operational loads to assess the impact of fatigue and also to determine accurate in-service life predictions. Element can design tests to simulate real-world loads cases utilizing multiple hydraulic cylinders coupled with advanced control systems and high capacity measuring systems.
The increasing need for lightweight design, combined with improved functionality, quality and economic build, continues to drive the need for comprehensive testing within key structural systems and components in the Aerospace sector.With state-of-the-art equipment and facilities, Element has demonstrated the capability and the know-how to perform complex and highly sophisticated test campaigns.
Some of our capabilities include:
- Deformation measurement
- Acoustic defect detection
- Imbalance Testing
- Impact Testing
- Load Testing
- Compression Testing
- Tension and Torque Testing
- Endurance Testing
- Multi-axial Testing
Modal Analysis & Testing
Modal Analysis is used to determine the structural mode shapes and operational deflection shapes (ODS) to find resonant frequencies and prevent problems caused by premature component failures and fatigue failure. Element's Engaged Experts help you save time and money by identifying mistakes in models and providing you with information on how to change a structure in order to move a load.
Impact Hammer Testing
- Impact Hammer Testing uses physical contact from impact hammers to characterize the dynamic properties of a structure or material
- Precise hammer strikes are coupled with accelerometers to record responses
- Element’s structural dynamics engineers can perform on- and off-site testing to meet your precise requirements
Scanning Laser Doppler Vibrometer (SLDV)
- Benefits from fast and laser-accurate results
- Non-contact method of modal analysis
- Doesn’t damage prototype or affect object’s structural dynamics
- Principally used to scan test objects to determine mode shapes
- Maximum acquisition bandwidth of 1MHz
- Excitation by EM shaker, speaker or piezo crystal
FEA Model Validation
- Used to validate FEA modeling against available data.
- Helps ensure against risky under-design and costly over-design
- Scanned 3D geometry, grid points and results can be imported into finite element analysis software for model generation and results correlation
Standards We Test To
American National Standards Institute
American Society of Civil Engineers
American Society for Testing & Methods
ASTM D 395, ASTM E 488, ASTM E 587
California Code Application Notice
CAN 2-1708A.5, CAN 2-1708A.5
International Code Council
ICC-ES AC156, ICC-ES AC193, ICC-ES AC308
International Electrotechnical Commission
IEC/EN/DIN EN 60068-2-34, IEC/EN/DIN EN 60068-2-6
International Standards Organization
ISO 1940-1, ISO 10816-1/6
International Safe Transit Association
ISTA 1A, 1B, 1C, 1E, 1G; ISTA 2A, 2B, 2C, 2D; ISTA 3A, 3C, 3D, 3E, 3F, 3G; ISTA 7B, 7D
MIL-STD- 167, MIL-STD- 202, MIL-STD- 810, MIL-STD- 867, MIL-STD-202
Netherlands Standards Institute
Radio Technical Commission for Aeronautics
Association of German Engineers
VDI 2057-1,2; VDI 2059-1,3,4,5; VDI 3822-1,2
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product testing laboratories
Element's product qualification testing labs span the US, UK and Germany, providing testing services to clients in Aerospace, Transportation, Oil and Gas and more.