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Hardness Testing got Easier |
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Written by Vivek Kant
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Friday, 04 May 2012 05:30 |
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Tinius Olsen introduces a new line of hardness testers. These new testers comprises over nine frames, and multiple variations on those frames, that test on almost all scales, including Rockwell, Superficial Rockwell, Brinell, Vickers, Knoop, micro Vickers, macro Vickers, and Knoop; the series also includes five Universal testers. All frames feature precision loadcell based measurements rather than dead weight loading, touch screens to aid user friendliness and increase the learning curve slope, connectivity through USB and WiFi, and the ability to consolidate resultant data with other TO test machine results within the Horizon software program. For More Information, you can click here, and visit our Main website. |
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Last Updated on Friday, 04 May 2012 06:04 |
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Written by Wayne Hayward
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Saturday, 14 April 2012 17:47 |
 Tinius Olsen is proud to now offer side loading hydraulic wedge grips for use with our Super L, U Series, Electomatic, and LoCap series of testers. These new grips feature a variety of optional wedge faces/grips and require their own hydraulic power pack for operation. Time tested and well proven in the field, these grips are a popular addition to Tinius Olsen's grip offering and are available in rated capacities of either 120kN or 300kN. To learn more about these grips, see the datasheet/specification sheet on our corporate website. |
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Last Updated on Saturday, 14 April 2012 17:55 |
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Extracting strain data from high speed video |
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Written by Vivek Kant
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Saturday, 16 April 2011 09:24 |
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The Problem When carrying out tests at high speed it is very difficult to extract reliable data on strains and displacements. Conventional solutions such as strain gauges tend to become debonded before the test has proceeded very far and a large number of expensive tests may be needed before a valid result can be obtained, making it extremely difficult to obtain statistically reliable data. The Solution  
Improvements in digital camera technology have made obtaining a video file a straight- forward matter of acquiring a suitable camera system. However, processing that data to obtain accurate displacement or strain data can be much more difficult. In the sample shown here a speckle pattern has been applied before test to give the maximum opportunity for post processing. Whilst the Video Gauge software has been designed around real-time measurements a capability has been demonstrated to post-process standard AVI files to permit strain recording from high speed tests. The data shown here came from a test of a carbon fibre cloth sample at about 400% strain/sec, and the strain is measured between the circles marked. It should be noted that the circles are not marked on the sample but are included here as an indication of where the measurements have been taken from. The video data can be re-measured as often as is required to map the strains and displacements across the sample under the full control of the user. Advantages of the Video Gauge The use of the Video Gauge to process digital images off-line offers the same advantages as operating in real time in terms of minimal specimen preparation, simplicity, non-invasive measurements, scale insensitivity and immunity to the effects of test environment. In addition operating from digital images allows the examination of archived data from tests carried out in the past but previously unused for measurement purposes. |
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Last Updated on Tuesday, 05 July 2011 08:03 |
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TO opens new Demonstration facility in India |
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Written by Vivek Kant
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Tuesday, 21 February 2012 09:11 |
Our New Demonstration facility is OPEN for Business. We have opened this new facility to support the tremendous efforts
of the Aimil Sales and Service teams across India. On display, and available for demonstration, we have: - MP600
- Grips and Attachments for L series.
Additionally, the demonstration facility is equipped with high speed internet access which will allow Tinius Olsen and Aimil staff
to give • online demonstrations to prospective customers, • online customer training, • online sales and service team training. |
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Last Updated on Tuesday, 21 February 2012 09:22 |
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Measurement of the consolidation and shrinkage processes in composites manufacture |
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Written by Vivek Kant
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Saturday, 16 April 2011 09:59 |
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The Problem It is very important in controlling the processing of advanced composites to develop an understanding of the consolidation and resin shrinkage processes throughout the cure cycle. For typical aerospace epoxies this requires the simultaneous application of pressure up to a few Bar and temperatures up to about 180°C to a prescribed cycle. Equipment is available to do this such as Thermo Mechanical Analysers (TMA), but their sample sizes are very small and interpreting their outputs can be problematical. The Solution To achieve a reliable set of data a pair of heaters was mounted in a die set so that a prescribed temperature and pressure could be applied to a composite sample nominally 4mm thick. Targets were attached to the steel plates in contact with the sample and their position monitored throughout the five hour cure cycle. The processes going on at each stage in the cure could be identified in a reliable and reproducible way over a long cure cycle. Advantages of the Video Gauge The experiments were very quick and simple to set up, whilst other approaches could be used to measure the displacement of the system difficulties might be expected with the temperature range required and the possibilities for baseline drift over a five hour cure cycle. The resolution of the data allowed consolidation due to flow and due to resin cure shrinkage to be separated and permitted the expansion coefficients of the composite to be established at various critical places in the cure cycle. The expansion coefficients measured in this way agreed closely with measurements made in more conventional ways. |
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Last Updated on Friday, 29 April 2011 06:33 |
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