Ambala, Haryana, India
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The apparatus has been developed on the basis of the design of British Building Research Station by L.F. Cooling and H.Q. Golder. It is a simple and portable apparatus and is used in both laboratory and field for testing unconfined compressive strength of undisturbed specimen of cohesive non-fissured soils taken from a borehole, a trail pit on open excavtion. A specimen of 38 mm dia by 76 mm long is placed in between two platens and the load is applied by means of a hand operated lead screw which expands a calibrated spring. The load deformation curve is plotted autographically by a recording pencil moving across the chart. Strength figures can be determined from the completed chart by supper imposing a specially calibrated transparent mask over the chart.
Specification :Consists of :- Load frame, spring loading with a pair of flat platens and arrangement for autographic recording of load deformation characteristics.
Charts, set of 50.
Spring set consisting one each of stiffness 2 N/mm (0.204 kgf /mm) 4N/mm
The machine is designed with a Hydraulic Power pack and control circuit for effortless loading unloading operation. A dial gauge in front measures depth of ball penetration. This facilitates production testing within tolerance limits by comparison method.
It is for determination the aggregate impact value and has been designed in accordance with BIS-9377-1979.
The sturdy construction consists of a base and support columns to form a rigid frame work around the quick release trigger mechanism to ensure and effective free all of the hammer during test. The free all can be adjusted through 380 + 5 mm. The hammer is provided with a locking arrangement.
Designed for conducting CHARPY, 1Z0D and IMPACT TENSION Tests. The test methods confirm to IS 1757-1961, IS 1499-1959 and BS 131 Part 2 % 3, IS 1598-1960, BS 131 (Part 1) and ASTM E 32-47T. The impact energy absorbed by the specimen during rupture is measured as the difference between the height of drop before rupture and the height of rise after rupture of the test specimen and is read on the dial scale.
The Hardness Testers have been designed and manufactured strictly conforming to IS. BS, ASTM, ISO and DIN Standards. Since 1966 for most exacting test requirements in the Laboratories and Workshops etc. These testers are designed and manufactured for measuring hardness of metals and alloys of all types, hard or soft, flat, round, tubular or irregular in shape. The testers are simple in design, easy to operate, yet very reliable and accurate.
