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Written by Vivek Kant
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Tuesday, 24 January 2012 10:00 |
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Another new evolution, in the field of indicators available for Tinius Olsen and other manufacturers concrete compression testing machines, is ECO 2. Version II of our successful ECO will display a force live reading during the test but report peak stress along with peak force when test is complete. The working features of ECO II are:
- User enters test specimen area before starting a test, it’s stored.
- During the test the instantaneous force is displayed.
- When test is complete the display automatically alternates between peak force and peak stress results.
 
 
TO ECO 2 head is supplied with TO 4 pillar compression machines and available for retro fits.
Key features and functionality
• 4 digit display.
• Force unit base factory set, imperial or Metric or SI indicated by LED.
• Force calibration range 1% to 100% accuracy +\- 1% of applied force.
• Specimen area input.
• Instantaneous force displayed during test.
• Result Peak Force and peak Stress.
• 4 user keys; Start Stop, Zero and Set Break Point.
• User defined Break Detect.
• Mains power and off line battery capability.
• Integral SSR for adaptation to pumping units.
• 10 point dynamic calibration. |
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Last Updated on Tuesday, 31 January 2012 11:28 |
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Written by Vivek Kant
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Monday, 12 December 2011 06:49 |
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 We have just launched the latest version of our Civil Engineering Testing Equipment catalogue. This catalogue, reference no B190 C, includes our new, comprehensive , Soil testing product line and also introduces our new relationship with the world’s premier sieve manufacturer, Endecotts. Our new catalogue now lets you have true one stop shopping for all your construction testing and civil engineering testing needs with equipment manufactured by the world’s best suppliers. The catalogue is available from your local representative, or as a downloadable electronic version by clicking here.
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Last Updated on Thursday, 22 December 2011 03:56 |
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Hidden Treasure at Anna University in Chennai |
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Written by Vivek Kant
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Wednesday, 24 August 2011 04:07 |
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We believe we have found the oldest testing machine in India. Regional Sales Manager John Bromley-Barratt and our local distributor, Aimil, found this hidden treasure at Anna University, Chennai. The machine seen here is a one of the Tinius Olsen Little Giant series and was installed in 1904; the machine was originally operated manually (electricity wasn’t commercially available at that time) and employed a lever based weighing system to determine applied loads. This machine was upgraded with an electric motor at some point in the past, and is still in regular use today for teaching students the principles of mechanical testing.
Anna University in India is one of the most reputed and highly rated universities in the field of academic and research. One of the colleges of Anna University, College of Engineering, Guindy (1794), is the very proud owner of this machine. |
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Last Updated on Wednesday, 24 August 2011 04:18 |
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Notable machines in the development of materials testing |
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Written by wayne
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Saturday, 02 July 2011 12:50 |
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David Kirkaldy was born near Dundee in Scotland in 1820. He worked at Robert Napier’s Vulcan Foundry Works in Glasgow where he developed several ideas for testing the reliability of metals supplied by local foundries – leading to a book, published in 1862 – An Experimental Inquiry into the Comparative Tensile Strength and other properties of various kinds of Wrought-Iron and Steel
His masterpiece was the Kirkaldy Testing Machine – a monster of a device that is 47 feet long and weighs 116 tons.
 The reason it was so massive is that testing in the early days was not carried out on samples of materials – but on actual finished products. Metals were still fairly impure – by modern standards – so testing was carried out on final finished units and it was presumed that along the length of a piece of steel or concrete, the imperfections would be roughly the same for all components. Today, the purity of materials is such that only tiny samples are really needed for testing.
MUSEUM
David Kirkaldy constructed a custom designed building – with the main testing machine on the ground floor, a basement with secondary testing equipment and the pumps for the hydraulic water to power the machine (later powered by the London Hydraulic Power Company) and upper floors for storing used test samples and offices. The upper floors are now offices, the ground floor has been given over to the museum (a legal ruling preserves it almost forever in that venue) and the place is open on the first Sunday of the month to visitors.
Once you get to the museum, there is a small sign directing you to go round the back, and there you will find a locked door with a small sign and a doorbell. Ring and someone will come to let you in. As the building is still a working environment to some degree, they can’t just leave the door open for people to wander around the place unescorted.
APPLICATION
Kirkaldy famously tested many samples taken from the first Tay railway bridge for the official Inquiry on the Tay Bridge Disaster. He confirmed that the wrought iron tie bars failed at their connections to the cast iron columns of the bridge, when he tested intact tie bars with complete lugs still attached. The attachments were cast iron lugs which fractured at the bolt holes, and numerous fractured lugs were found after the disaster lying on the piers. The critical strengthening elements were much weaker than had been supposed by Thomas Bouch, the engineer of the first bridge. They failed at about 20 tons tensile load rather than the specified 60 tons, and were a prime cause of the collapse of the bridge on 28 December 1879.
Since Kirkaldy tested several samples of each of the lower and upper lugs, he was able to show that they exhibited a range of strengths, the lowest results being caused by defects like blow holes in the cast metal. Thus some of the upper lugs were actually weaker than the strongest lower lugs, an observation confirmed by damage shown on the remains left on the piers after the disaster. He tested the wrought iron tie bars themselves, and they proved tough, as specified, although only slightly stronger than the cast iron lugs to which they were attached. The high girders were also made of wrought iron and had a very high tensile strength. They were found after the accident at the bottom of the Tay estuary and had sustained relatively little damage compared with the cast iron columns which supported them.
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Last Updated on Saturday, 02 July 2011 13:24 |
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Article on improving MFI results in Plastics Technology magazine |
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Written by wayne
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Tuesday, 09 August 2011 13:22 |
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 Further to the popular webinar that we held with Plastics Technology magazine, the editors of the magazine asked us to develop the webinar into a printed article to be published in the September issue of the magazine. Click here to see a copy of the article.
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Last Updated on Tuesday, 09 August 2011 13:30 |
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Webinar on Troubleshooting Bad MFI Results |
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Written by wayne
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Friday, 13 May 2011 18:12 |
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We recently held a webinar with Plastics Technology Magazine on Troubleshooting Bad MFI Results. The webinar was, again, very well attended with lots of interest and many questions at the end of the webinar. The webinar was recorded and is available for download from gotomeeting, so if you were unable to attend the webinar, you can listen to it now.
Click here to listen to the recording. |
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