平面双轴测试系统(Planar Biaxial Test System)
型号:Planar Biaxial Test System
联系人:李先生
联系电话:18618101725
品牌:biss
平面双轴测试系统（Planar Biaxial Test System）
平面双轴测试带来了许多挑战，因为负载的两个轴应能够以所需的模式（行程，负载或局部（轴向）应变响应）进行j确的立控制，并且在负载之间分配所需的负载和相位滞后轴。另一个挑战是将载荷限制在严格的双轴方向，而没有任何剪切分量，这不仅可能扭曲所需的应力状态，而且还可能对标距区域之外的样品造成意外损坏。
满足此要求的常规方法是在所谓的“主从”模式下驱动相对的执行器，从而使从器跟踪主执行器的位置，从而使被测样本中心的位置保持不变。
特征：
- 自反应双轴水平荷载框架
- 600 x 800 mm日光，用于抓握区域
- 线性轴承可保护称重传感器和执行器免受侧向载荷
- 伺服电动执行器组件，力为1 kN，额定行程为30mm
- 额定用于高达5 – 10 Hz的动态应用
- 内置光学编码器的大速度为0.1 m / s，分辨率为0.001 mm
- 1 kN动态容量的称重传感器
- 多通道控制系统和硬件
- 双轴视频引伸计（可选）
应用领域：
- 生物组织和生化构造的测试
- 软塑料，纤维，线束，电线的测试
- 屈服强度和j限强度
- 蠕变和粘弹性特征
- 疲劳特性
- 疲劳韧性和断裂力学
- 弹性模量
- 泊松比
- 热膨胀系数
- 反应特性
Planar Biaxial Test System
Most practical situations involve multi-axial loading. For example, any pressure vessel will see biaxial loading from the axial and hoop stress components. A planar biaxial test system consists of four servo-actuators positioned at right angles to each other on a free-standing self-reacting load frame. Planar biaxial test systems differ from axial-torsion systems. They involve the use of cruciform shaped specimens.
Planar biaxial testing poses a number of challenges in that the two axes of loading should be amenable to precise independent control in the desired mode (Stroke, Load or local (axial) strain response) and with desired distribution of load and phase lag between the two axes. Another challenge is to restrict loading to strictly biaxial, without any shear component whatsoever that may not only distort the desired stress state, but also threaten unintended damage to the specimen outside the gauge area.
The conventional approach to meeting this requirement is to drive opposing actuators in so called ‘Master-Slave’ mode, whereby the Slave tracks the position of the Master actuator, resulting in unchanged position of the perceived specimen center.
Features
- Self reacting biaxial horizontal load frame
- 600 x 800 mm daylight for gripping area
- Linear bearings to protect the load cell and actuators from side loads
- Servo electric actuator assembly with 1 kN force and 30mm stroke rating
- Rated for dynamic application up to 5 – 10 Hz
- Maximum speed of 0.1 m/s with built in optical encoder with a resolution of 0.001 mm
- Load cell of 1 kN dynamic capacity
- Multi channel control system & hardware
- Biaxial video extensometer (optional)
Applications
- Testing of biological tissues & biochemical constructs
- Testing of soft plastics, fibers, bundles, wires
- Yield and ultimate strength
- Creep and visco-elastic characteristics
- Fatigue characteristics
- Fatigue toughness and fracture mechanics
- Modulus of elasticity
- Poisson’s ratio
- Coefficient of thermal expansion
- Response characteristics