Structural Dynamics Testing

Acceleration Testing

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 ouracceleration testing能力包括：

• Forces up to 11400 Kgf
• Frequencies from 5 – 3,000 Hz.
• Hydraulic Shaker up to 4500 Kgf
• Payloads up to 1600 kg

Spin Testing

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 reasonspin testingbecomes an indispensable part of aero engine development.

使用我们的广泛设施可以在使用高度复杂的旋转试验台下测试机Aero发动机，涡轮压缩机，涡轮增压器和鼓风机的大部分旋转部件。

• 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
• 旋转标本裂纹检测和裂纹生长监测
• High-speed cameras

High-level vibration and extended stress can degrade the structural integrity of a product, makinghigh-cycle fatigue和low-cycle fatiguea 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.

我们的一些能力包括：

• Strain gauge calibration
• 从标准杆到全尺寸风扇刀片的标本尺寸
• Frequencies up to 20kHz
• 温度高达1200°C
• 力控制和应变控制程序
• Open-hole fatigue testing
• 张力张力疲劳试验
• Tension-compression fatigue testing

Vibration Testing

Vibration testingsimulates 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:

• 正弦
• Random
• 共鸣搜索和居住
• Narrow Band Random on Random
• 正弦随机
• Combined Temperature and Vibration
• Helicopter Rotor Frequency Simulation
• Gunfire Simulation
• SRS.
• Blade-off vibration (engine fan blade loss and windmilling)

Drop & Shock Testing

Shock testingis 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.

我们的一些震动测试能力包括：

• Operational shock and crash safety
• Gunfire simulation
• 古典冲击（半正弦和锯齿检测）
• Decaying sine wave testing
• 凹凸测试
• 脉冲测试
• 跌落测试
• Impact testing

Element helps manufacturers to understand and meet the seismic qualification requirements, of which are often specific to a project, industry or sector. Ourseismic testing和认证服yabo官网入口务确保产品在最极端的振动条件下，产品将继续在不损失功能下进行，使其成为安全关键系统和组件的核设备制造商必不可少的。

我们的地震测试计划包括：

• Test plan and strategy creation
• Fixture design
• Exploratory Testing
• 单轴测试
• Biaxial Testing
• Triaxial Earthquake Testing
• 资格文件

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.

我们的一些能力包括：

• 变形测量
• Acoustic defect detection
• Imbalance Testing
• Impact Testing
• 负载测试
• Compression Testing
• Tension and Torque Testing
• 耐力测试
• Multi-axial Testing

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Impact Hammer Testing

• Impact Hammer Testing uses physical contact from impact hammers to characterize the dynamic properties of a structure or material
• 精确的锤击与加速度计结合以记录响应
• Element’s structural dynamics engineers can perform on- and off-site testing to meet your precise requirements

扫描激光多普勒振动计（SLDV）

• Benefits from fast and laser-accurate results
• Non-contact method of modal analysis
• 不会损坏原型或影响物体的结构动态
• 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