平面雙軸測試系統(tǒng)(Planar Biaxial Test System)
型號:Planar Biaxial Test System
聯(lián)系人:李先生
聯(lián)系電話:18618101725
品牌:biss
平面雙軸測試系統(tǒng)（Planar Biaxial Test System）
平面雙軸測試帶來了許多挑戰(zhàn)，因為負(fù)載的兩個軸應(yīng)能夠以所需的模式（行程，負(fù)載或局部（軸向）應(yīng)變響應(yīng)）進行j確的立控制，并且在負(fù)載之間分配所需的負(fù)載和相位滯后軸。另一個挑戰(zhàn)是將載荷限制在嚴(yán)格的雙軸方向，而沒有任何剪切分量，這不僅可能扭曲所需的應(yīng)力狀態(tài)，而且還可能對標(biāo)距區(qū)域之外的樣品造成意外損壞。
滿足此要求的常規(guī)方法是在所謂的“主從”模式下驅(qū)動相對的執(zhí)行器，從而使從器跟蹤主執(zhí)行器的位置，從而使被測樣本中心的位置保持不變。
特征：
- 自反應(yīng)雙軸水平荷載框架
- 600 x 800 mm日光，用于抓握區(qū)域
- 線性軸承可保護稱重傳感器和執(zhí)行器免受側(cè)向載荷
- 伺服電動執(zhí)行器組件，力為1 kN，額定行程為30mm
- 額定用于高達5 – 10 Hz的動態(tài)應(yīng)用
- 內(nèi)置光學(xué)編碼器的大速度為0.1 m / s，分辨率為0.001 mm
- 1 kN動態(tài)容量的稱重傳感器
- 多通道控制系統(tǒng)和硬件
- 雙軸視頻引伸計（可選）
應(yīng)用領(lǐng)域：
- 生物組織和生化構(gòu)造的測試
- 軟塑料，纖維，線束，電線的測試
- 屈服強度和j限強度
- 蠕變和粘彈性特征
- 疲勞特性
- 疲勞韌性和斷裂力學(xué)
- 彈性模量
- 泊松比
- 熱膨脹系數(shù)
- 反應(yīng)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
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