Planar Biaxial Test Machine

다채널시험기 또는 플라나 2축시험기, 평면 4축 시험기라고도 하는 Planar biaxial test machine은 실제 다축 응력 상태를 재현하는 평면내 응력을 생성하는 고유한 기능을 갖추고 있습니다. 모든 Planar biaxial test machine은 두 축에 서로 마주 보도록 장착된 네 개의 액추에이터로 구성되어 있으며, 각 액추에이터는 4채널 서보 컨트롤러 또는 스텝모터에 의해 독립적으로 제어되어 모션 또는 변형률, 하중의 독립적이고 동기화된 제어를 수행합니다. 각 액추에이터는 다른 세 개의 액추에이터와 함께 작동하여 원하는 4축 응력을 재현하도록 제어됩니다.

본 시스템은 electric dynamic modular test machine으로써 생물 의학 및 고분자 재료 공학 연구에 사용되는 저하중 4축 시험 분야에 이상적입니다. 신축성 필름, 경질 폼, 유리 섬유, 직물, 판금 고정 장치, 실리콘 엘라스토머, orthotropic plate 및 섬유 조직, arterial walls(동맥벽), 척추 디스크 조직, 피부, 심장 판막과 같은 생물학적 시료와 같은 다양한 분야에 사용할 수 있습니다. 또한, 방향성이 있는 미세 구조의 기계적 특성을 시험하는 데에도 이상적입니다.

당사의 biaxial test system은 접촉식 신율계나 적절하게 구성된 DIC(digital image correlation) 비디오 카메라로 구성할 수 있으며, 이를 통해 변형률 측정 제어가 가능합니다.

TestResources의 574 Series Electrodynamic Planar Biaxial test system은 연구자에게 평면 4축 하중 조건에서 저강도 재료의 quasi-static, dynamic,  피로 성능을 특성화하고 평가할 수 있는 새로운 기능을 제공합니다. 574 시스템을 사용하면 재료 특성 분석에 사용되는 거의 모든 기계적 시험을 수행할 수 있습니다.

시스템은 생물의학 재료, 스트레처블 점착 필름의 측정이 가능한 매우 낮은 하중의 구성부터 최대 ±30kN(6,750lbf)의 높은 하중 구성이 필요한 일반 재료 시험 애플리케이션까지 다양한 재료의 시험이 가능한 완벽한 테스트 솔루션으로 제공됩니다. 고객의 고유한 애플리케이션 요구 사항을 충족하는 솔루션을 위해 협력하겠습니다.

Transducers

Transducers include load and position encoder based measurements with both contacting and non contacting strain based extensometers available. The video extensometer uses digital image correlation (DIC) technology.

Four Channel Test Controller

All system configurations feature high precision load and optional strain control on two synchronized axes which makes it possible to create controlled complex biaxial stress and strain test states. The system is user programmable for static tensile/compression and fatigue tests on flat test samples. Our four channel closed loop servo controller controls all four actuators independently to move in synchronized opposing directions on two axis perpendicular to each other. Independent control allows the ability to keep one or more actuators operating with different parameters for possible unequal states of stress testing methods.

Four Actuators

The actuators and load cells are specifically matched to your load and speed application requirements. Each actuator includes high precision noise free digital position encoders. Our 24 bit controller increases resolution for analog transducers such as LVDT, load cell, and extensometers. Our controllers set a new performance standard for low noise floor, delivering better than 0.02% on raw data; even better than that when used with the unit's digital filters.

Features

• Modular System Design: This system is an expandable solution designed so that you can integrate additional actuators (e.g. torsion) to create new system configurations. You can grow your test solution when needs change or evolve. The system includes four independently controlled actuators that enables you to test your samples in different states of stress or in equibiaxial conditions. The actuators can be user reconfigured and set up as four independent uniaxial test stations. The controls are capable of either mode - single 4 channel controlled planar biaxial or 4 stations of single channel control (e.g. multi-station control).
• Actuator Technology: This actuator is uniquely suited for low to high force applications with high stability and excellent controllable response at test speeds to 15 hz. It is a perfect solution for static and fatigue testing applications. Each actuator will stroke 75 mm (3 in) with options up to 450 mm (18 in). Actuator displacement is measured to 0.1 micron resolution using integrated position encoders.
• Flexible High Resolution Controller: Four channels of independent load, position and strain control make it ideal for static, dynamic and fatigue tests including tension, compression, shear, stress relaxation, and creep. It is ideal for single channel uniaxial tests, multiaxial tests and multi station test setups. Maximum data acquisition rate is 5,000 hz and includes high resolution (24 bit) data acquisition. With this control quality, all 574 models can perform sub gram load controlled tests.
• Test Data Analysis: Data is available in ASCII and CSV file formats for further user analysis in applications like Excel or Matlab. Our design goal is to give you, the test researcher, the freedom to ‘do it your way’ when it matters most.
• Remote Data Monitoring: Use any windows based computer to run your machine. Our controllers use TCP/IP technology to connect to any PC in your lab. We do not customize your PC and this means you can monitor the status of those long term tests from your desktop PC.

Options

• Strain measurement and control
• Choice of load cells – selected to match sample and application requirements
• Integrated standalone video extensometer with DIC technology

System Specifications

Applications

• Low Forces - Biomedical (574LE1 and 574LE2)
  • Good for micromechanical tests where subgram loads need to be controlled and measured.
  • Soft biological fibrous tissues
    • Example: Planar Biaxial Tester for Biological Soft Tissues
    • Example: Planar Biaxial Tests of Collagenous Soft Biological Tissues
  • Medical components
  • Medical devices
  • Biomechanical research
  • Thin films
• Moderate Forces - (574LE3, 574LE4, 574LE5)
  • Sheet metal
  • Hard foams
  • Hyperelastic rubber
  • Fibre reinforced polymer composites
  • Silicone elastomers
  • Flexible materials and rigid substrates

Accessories

Each system includes sample grips or test fixtures, strain measurement and strain control options, chambers and bathes to produce a controlled test media. We are experts at supplying turnkey systems with integrated fixturing and strain measurement instrumentation.

• Biomedical Bathes for soft tissues and biological samples
• Environmental Chambers
• Extensometers
• Grips and Fixtures compatible with environments

Planar Biaxial Test Machine Video