Extensometers – Công ty TNHH TM DV KT Minh Khang //vospan.com Wed, 05 Jul 2023 08:08:44 +0000 en-US hourly 1 //wordpress.org/?v=6.1.4 //vospan.com/wp-content/uploads/2021/02/favicon-32x32.png Extensometers – Công ty TNHH TM DV KT Minh Khang //vospan.com 32 32 Extensometers – Công ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/vem-300-series-extensometers/ Wed, 05 Jul 2023 08:05:35 +0000 //vospan.com/?post_type=product&p=8830 Tinius Olsen’s VEM 300 series video extensometer is designed as a flexible platform, allowing users to define their own extensometer performance using standard technology building blocks to measure low or high strain in tensile, compression, shear and flexural modes. The building blocks consist of camera and lens, lighting, machine frame mounting options and data exchange options.

The VEM 300 series is directly compatible with all Tinius Olsen testing machine frames, single, twin and four-column machines. Camera staging options are available, including a unit that allows for fine X, Y and Z camera positioning and adjustment for optimum measuring performance. The 300 series can be mounted at the front or rear of most testing machines or free-standing on a tripod.

There are more than 70 lens types to choose from to suit specific camera lens performance, for example for data capture speed, field of view in which the event will occur, resolution and accuracy.

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This versatile extensometer platform delivers zero gage length error every time and quick application of gage marks, including for the measurement of rotation to track specimen alignment during the test. Calibration is digitally embedded and can be verified at any time using a standard traceable gage block supplied.

Tinius Olsen’s VEM Video extensometer is straightforward to use, whether it is for a research application or as an educational tool. Test reporting is strengthened by the strain embedded video record which, along with the strain mapping option, gives depth to material analysis and reports.

]]> Extensometers РC̫ng ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/vectorextensometer-single-200/ Wed, 05 Jul 2023 07:53:51 +0000 //vospan.com/?post_type=product&p=8823 Single variable gage length measurement From 25-180mm gage length, dependent on elongation % within 200mm FOV Tinius Olsen introduces Vector a step change in extensometer technology capable of replacing multiple contacting and non-contacting sensors with a single, industry specific instrument. Integrating adaptive AI capabilities with optical hardware, Vector reduces test throughput times and complexity, automating the process of capturing strain, improving measurement accuracy, data consistency and operator safety.]]>
  • Non contacting with digital placement of specimen gage marks supporting an automated process.
  • 0.5 μm resolution (1.9685039e-5 inch), ISO 9513 Class 0.5 and ASTM E83 Class B1 capable.
  • Various marking options available, material dependent. Rings, speckles.
  • Output data available in analog format.
    • ]]>         Extensometers – Công ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/strain-gage-type-extensometer/ Wed, 05 Jul 2023 07:36:57 +0000 //vospan.com/?post_type=product&p=8816

    Extensometers measure strain, the change in length of a specimen divided by the original length (gage length) of the specimen, by means of knife edges that contact the sample. This series of extensometers comprises strain gage devices.

    The models in this series of extensometer can be used to measure either longitudinal or transverse strain, or can be used in combination for determining ‘r�value and Poisson’s ratio.

     
     
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    • Mechanical overtravel stops in both directions
    • Cable stops are used for overtravel where required. Cable stops are contained fully between the arms of the extensometer and do not hang below, where they can interfere with fixturing â€?especially during compression testing
    • Standard units meet existing ASTM class B-1 and ISO 9513, class 0,5 requirements for accuracy
    • Hardened tool steel knife edges are easily replaced. A spare set comes with every extensometer
    • Temperature options extend from as low as -265°C/-450°F to 200°C/400°F
    • Includes high quality foam case
    • Replaceable arms and spacers for ease of repair. This also allows changing the gage length for different test requirements
    • Standard quick attach kit allows one-hand mounting to specimens
    ]]>         Extensometers РC̫ng ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/non-contact-video-extensometer/ Wed, 05 Jul 2023 07:05:44 +0000 //vospan.com/?post_type=product&p=8809

    Tinius Olsen’s Epsilon ONE high-precision optical extensometers measure axial strain with industry-leading resolution, accuracy and speed.

    Innovative Instant Reset, Always On and Laser Alignment features maximize performance and increase testing throughput.

    Tinius Olsen Epsilon ONE optical non-contact extensometers perform high-accuracy, high-resolution, non-contacting axial strain and displacement measurement. These extensometers are suitable for testing high-modulus materials such as metals and composites, high-elongation materials, thin or delicate specimens, cyclic fatigue, strain controlled testing, deflectometer applications, and measuring crack opening displacements. Strain or extension is measured and output in real time.

    Epsilon ONE’s high resolution and ISO 0,5 / ASTM B-1 accuracy classes make it suitable for non-contact measurement of a wide range of strain values, from very small strains required to measure modulus of metals, composites, ceramics and CMCs through elastomers and everything in between.

     
     
    ]]>     Class-leading accuracy and resolution are achieved by Epsilon’s comprehensive optical path optimization, a unification of several optical technologies and signal processing algorithms. Ultra-high camera resolution, real-time data rates up to 3000Hz, minimization of optical error sources, and signal processing techniques provide high strain resolution and accuracy with the lowest noise. No other system on the market combines all of these technologies.

    The Laser-Assist Alignment System provides an instant alignment and distance spot check. Epsilon ONE will project pre-aligned laser lines on the specimen before the test, revealing any misalignment. During the test, high precision telecentric lenses eliminate errors due to out-of-plane movements �on low strain materials and components. Epsilon ONE arrives factory calibrated �there are no calibration grids or gage length bars, saving a great deal of time.

    The system sets up for new specimen types in minutes and requires very little training or skill to use. The desktop user interface software and optional Touch Interface provide continuous digital readouts and status information.

    Epsilon ONE was designed for the fastest specimen cycle times. Auto-start repetitive tests without any software interaction; Epsilon ONE is always running, and its Instant Reset and Automatic Mark Detection eliminate software start/stop interactions common with video extensometers. Epsilon ONE fits all types of materials testing machines. The system may be used with environmental chambers that are equipped with a window

    ]]>         Extensometers РC̫ng ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/lvdt-type-extensometer/ Wed, 05 Jul 2023 06:44:16 +0000 //vospan.com/?post_type=product&p=8800
  • Averaging â€?With this type of extensometer, knife edges are placed on opposite sides of the specimen to provide an average amount of strain between the two gauge points.
  • Film Clamps â€?These spring activated clamps allow precise strain measurement of thin materials up to 3mm/0.125in thick, including plastics and foils, without marring the specimen. This option is only available for non-averaging extensometers and typically requires the use of a counterbalance to support the extensometer.
  • Breakaway Release â€?This option is ideal for measuring strain on samples with brittle characteristics that may cause premature failure. It typically requires the use of a counterbalance to support the extensometer and is available for both averaging and non-averaging type extensometers.
  • Sheet Metal Attachment â€?This option allows the extensometer to accommodate thin, flat specimens. Note that this option is only available for non-averaging extensometers and typically requires the use of a counterbalance to support the extensometer.
  • Extension Bracket â€?This option allows the extensometer to be used with samples that are thicker than maximum opening of 16mm/0.625in on the standard model. There are three versions where an extension bracket allows the extensometer to be mounted on samples that are 25mm/1in, 50mm/2in or 75mm/3in thick. This option is only available for non-averaging extensometers.
  • Pneumatic Release â€?This option is combined with a swing-away support and allows the remote release of the extensometer from the sample.
  • Counterbalance Support â€?This option is used to support the extensometer and is commonly used when the extensometer is attached to small or fragile samples.

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    ]]>         Extensometers РC̫ng ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/automatic-extensometer/ Wed, 05 Jul 2023 04:40:36 +0000 //vospan.com/?post_type=product&p=8795
  • Two-sided measurement by means of four measuring sensors
  • Very high resolution of up to 0.1μm over the complete measuring range
  • Very low clamping forces allow testing of foils and thin wires
  • The round knife edges can be utilized along their entire perimeter by rotating them
  • The gage length position and value can be exactly set under computer control
    • ]]>         Extensometers – Công ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/500lc-laser-extensometer/ Wed, 05 Jul 2023 04:16:35 +0000 //vospan.com/?post_type=product&p=8784

    MEASURING EXTENSION

    Preparation of the test specimen is quick and easy. A punch is supplied to cut narrow strips of adhesive reflective tape. The gage length is defined by attaching these two reflective strips to the sample. Any gage length can be used and this is accurately measured by the laser at the start of the test.

    When force is applied to the sample, the laser scanning beam will measure the separation of the reflective gage marks at a scan rate of 320 scans per second.

    Unlike other non-contacting extensometers, if the scanning beam is interrupted for any reason, elongation measurements will automatically be corrected when normal operation is resumed.

    ]]>         Extensometers РC̫ng ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/100r-extensometer/ Wed, 05 Jul 2023 03:54:57 +0000 //vospan.com/?post_type=product&p=8775

    MEASURING EXTENSION

    Extension is measured by attaching two counterbalanced extensometer clamps to the specimen at a pre-selected gage length.

    When tensile forces are applied to the specimen by the testing machine, the slightest change in gage length is measured by an optical encoder. Signals from the optical encoder are fed into the signal conditioner interface for processing.

    The 100R extensometer can be fitted to all sizes of screw-driven materials testing machines.

    ]]>         Extensometers РC̫ng ty TNHH TM DV KT Minh Khang //vospan.com/en/san-pham/100s-extensometer/ Wed, 05 Jul 2023 01:57:35 +0000 //vospan.com/?post_type=product&p=8759 MEASURING EXTENSION

    Extension is measured by attaching two counterbalanced extensometer clamps to the specimen at a preselected gage length.

    When tensile forces are applied to the specimen by the testing machine, the slightest change in gage length is measured by a precise LVDT transducer. If the range of this LVDT transducer is exceeded, measurement of elongation and strain transfers to an optical encoder.

    Signals from the LVDT and optical encoder are fed into the signal conditioner interface for processing. The 100S extensometer can be fitted to all twin-screw materials testing machines and must be used under software control.

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