Khushboo Scientific Private Limited
Khushboo Scientific Private Limited
Nariman Point, Mumbai, Maharashtra
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Abrasion

We are a leading Wholesale Trader of fabric stiffness tester, heavy duty linear abraser, taber stiffness tester, torsional stiffness apparatus and webbing abrasion tester from Mumbai, India.

Fabric Stiffness Tester

Fabric Stiffness Tester
  • Fabric Stiffness Tester
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Product Details:

Minimum Order Quantity1 Number
BrandTaber,USA

The Taber® Fabric Stiffness Tester - Model 112 provides a quick and accurate method of determining stiffness properties such as flexural rigidity of most textile fabrics according to internationally recognized test standards such as ASTM D1388. Ideal for testing textile fabrics (e.g. woven; layered; pile; knitted; napped), this instrument has been utilized to evaluate the stiffness properties of blankets, air bag fabrics, protective clothing, geotextiles, etc. Fabrics may be untreated or treated, including those that are heavily sized, coated or resin-treated. Taber's Fabric Stiffness Tester can also be used to evaluate leather, paper, plastic films, and other flexible sheet materials.
Employing the principle of cantilever bending, a rectangular specimen is supported on a smooth low-friction horizontal platform. A weighted slide is placed over the specimen and advanced at a constant rate. As the leading edge of the specimen projects from the platform, it bends under its own weight. The bend angle indicator can be set at either 41.5° (0.724 rad) or 45° (0.785 rad) below the plane of the platform surface, and includes an easy to read bend angle reference scale with 5° graduations. Once the material flexes enough to touch the bend angle indicator, the test is stopped. Using a scale calibrated in both metric and English units, the length of the overhang is then measured and flexural rigidity and bending modulus can be calculated.

The Fabric Stiffness Tester is available with or without the Hand Crank Speed Control Option. This feature allows the operator to control the rate of speed that the specimen is advanced.
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HEAVY DUTY LINEAR ABRASER

HEAVY DUTY LINEAR ABRASER
  • HEAVY DUTY LINEAR ABRASER
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The TABER® Heavy Duty Linear Abraser - Model 5800 is used to evaluate material properties of products with a rugged, durable surface finish that require an increased testing load or longer stroke length. Supplied with the 2" diameter Universal Attachment and Scotch-Brite™ scouring pads, the Heavy Duty Linear Abraser is ideal to measure a coating's resistance to scrubbing with an abrasive scouring pad. A popular application includes evaluating non-stick coatings used on cook / bake ware

Description
Similar to Taber's Linear Abraser, a test attachment is secured to the bottom of a vertical spline shaft and accessory weights may be placed on a weight holder affixed to the top. A precision bearing on the spline shaft creates a "free-floating" test system. As the test arm moves in a linear motion, the "free-floating" system will raise or lower as the test attachment follows the contours of the specimen being tested - curved or flat.

The base load of 500 grams consists of the test attachment, spline shaft and weight holder. Accessory weights of 1000, 2000 and 4050 grams are included and can be added to the weight holder to increase the test load. With a high torque motor, the Heavy Duty Linear Abraser can accommodate a maximum testing load of 20 lbs. (weight sold separately).

Other features of the Heavy Duty Linear Abraser include a slotted roller channel allowing stroke length adjustments up to 318mm (12.5 inch); five preset speeds including 15, 30, 37, 45, and 60 cycles per minute; and an integrated T-slot table for securing specimens during testing.

With interchangeable attachments, the Heavy Duty Linear Abraser can also be configured similar to the Linear Abraser to evaluate the relative resistance or susceptibility of a material surface to wear and abrasion, scratch, gouge, scrape, rub, and more. In addition, the instrument can be used for both wet and dry testing. To increase test output, an optional second test arm kit may be added to perform two tests simultaneously.

Evaluation
Tests conducted with the Heavy Duty Linear Abraser using the Scotch-Brite™ scouring pads are normally performed until the surface coating has been worn down to the substrate material or a portion thereof (breakthrough). Alternatively, tests can be run for a predetermined number of cycles (e.g. 10,000) with mass loss used as the end point.
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  • Item Code: 5800
  • Minimum Order Quantity: 1 Number
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TABER STIFFNESS TESTER

TABER STIFFNESS TESTER
  • TABER STIFFNESS TESTER
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The TABER® V-5 Stiffness Tester - Model 150-B or 150-E is used to evaluate stiffness and resiliency properties of materials up to 10,000 Taber Stiffness Units. This precision instrument provides accurate test measurement to ±1.0% for specimens 0.004" to 0.219" thickness. Materials include paper products, cardboard, plastics, metals, textiles, rubber, wire, tubing, felts and other sheet materials.

Incorporated in the TABER V-5 Stiffness Tester is a bi-directional pendulum weighing system. Providing an accurate and responsive method for measuring small load increments, this system is a critical component for determining material stiffness or resiliency. Nine (9) distinct ranges permit testing of materials that are extremely lightweight and flexible (such as cellophane or thin metallic foils) to items that are very rigid (such as plastics).

For test ranges 2 - 9, specimens are mounted on the Taber V-5 Stiffness Tester using a clamping system. Located on the pendulum, the lower faces of the specimen clamp jaws are exactly on the center of rotation.

Taber Stiffness Testers 150B (left) & 150E (right)
This ensures a constant test length and deflection angle for accurate and repeatable results. Both jaws of the specimen clamp are adjustable, so the test specimen can be positioned precisely in the center regardless of material thickness. Force is applied to the lower end of the specimen by a pair of rollers. The rollers, which are attached to a driving disc located directly behind the pendulum, push against the test specimen and deflect it from its vertical position. The pendulum applies increasing torque to the specimen as it deflects further from its original position. The test point reading occurs when the pendulum mark aligns with the appropriate driving disc mark (7 1/2° or 15°), which points to the stiffness reading on the dial point. The final reading will depend on the range in which the test is being conducted and what scaling factor to use. The instrument outputs the moment load applied to the test specimen in TABER Stiffness Units (g · cm).

Note: The right hand roller includes a ratchet stop mechanism that greatly reduces the potential for inter-operator error caused by over or under-tightening. The travel on the right hand assembly automatically stops when the roller contacts the specimen.

To allow the testing of materials with different stiffness properties, range weights can be applied to the pendulum. For extremely light weight materials, a compensator range weight is mounted to the top of the pendulum. Range weights of 500, 1000 and 2000 "Taber Units" are mounted to the bottom of the pendulum and required for stiffer materials. An optional range weight set of 3000 and 5000 Taber units is required for test ranges 7, 8 and 9.

Range 1 is used with Taber's optional Sensitivity Range Attachment (also referred to as SR or High Sensitivity Attachment) to test extremely lightweight and flexible materials whose Taber Stiffness Unit value are between 0 - 1. Examples include cellophane, natural fibres and synthetic filaments, tissue paper, metallic foils, films, etc. The attachment includes two parts, the Driven Pins Holder which is secured between the clamp jaws, and the Driving Pins Holder which is mounted to the studs in place of the left and right hand rollers. Both parts include precision pins that are oriented horizontal to the face of the V-5 Stiffness Tester. A specimen 1 1/2" x 1 1/2" is mounted such that the second and fourth pins are above the specimen. As the driving disc rotates, the fourth pin of the Driving Pins Holder pushes down on the specimen while the first pin pushes up. As the sample is deflected, the Driven Pins Holder aligns the pendulum to the appropriate stiffness value. For Range 1, the specimen is only deflected to the right.
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  • Item Code: 150B
  • Minimum Order Quantity: 1 Number
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TORSIONAL STIFFNESS APPARATUS

TORSIONAL STIFFNESS APPARATUS
  • TORSIONAL STIFFNESS APPARATUS
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Minimum Order Quantity1 Number
Model Number108

The Taber® Torsional Stiffness Apparatus - Model 108 has been employed to measure the relative stiffness of gloving leathers. Based on the design described in ASTM D2821 (Standard Test Method for Measuring the Relative Stiffness of Leather by Means of a Torsional Wire Apparatus), this instrument is useful in measuring the flexibility and stiffness of a leather or other bendable specimen.

The Torsional Stiffness Apparatus incorporates a torsion head and wire that translate a twisting motion to a 1/2" wide x 4 1/2" long specimen. Mounted to a rigid base and support post, the torsion head includes a dial protractor graduated from 0 to 360°. Made of 0.010 inch diameter tempered stainless steel wire, the torsion wire passes through the center of the torsion head in a loosely fitting sleeve gripped by a friction bearing. A fixed index pointer indicates the degrees of twist introduced to the torsion wire.

Specimens are secured to the Torsional Stiffness Apparatus by two clamps. The upper specimen clamp is fastened to the lower end of the torsion wire and is able to rotate as the torsion wire is twisted. The lower specimen clamp holds the specimen in place which allows the twisting action to occur. To accommodate the twisting action, the lower specimen clamp can slide up or down guide posts mounted to the base.

To operate the Torsional Stiffness Apparatus, the torsion head is rotated in a plane normal to the torsion wire. As the torsion head rotates, the torsion wire twists the test specimen. Mounted to the top of the test specimen upper clamp assembly is an indicator that measures the twist applied to the specimen until the specimen has been twisted 90°.

Taber Torsional Stiffness Apparatus 108
An optional Finger Control Knob provides an ergonomic design that allows for two-hand operation of instrument, permitting a smooth twisting action of the specimen.
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WEBBING ABRASION TESTER

WEBBING ABRASION TESTER
  • WEBBING ABRASION TESTER
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The TABER® Webbing Abrasion Tester - Model 5820 is used to evaluate abrasion resistance properties of seat belts and other webbing products (e.g. safety straps, tie-downs, harnesses, helmet straps, etc). Common types of materials that can be tested with this instrument include nylon, polyester, leather, polymers, and other flexible sheet materials.

Description
A specimen clamp bar secures the specimen to the instrument while a specimen roller ensures an angle of 85° (±2°) is maintained between the specimen and hexagonal (hex) abrasion bar. Test specimen is weighted, and then subjected to a unidirectional reciprocal rubbing action as it travels back and forth over the hex abrasion bar. The test specimen passes over two of the six abrading edges of the 12" hex abrasion bar during each test. 

Depending on specimen width, up to three specimens can be evaluated simultaneously. Other features of the Taber Webbing Abrasion Tester include a slotted roller channel allowing a maximum stroke length adjustment of 305mm (12 inch); five preset speeds including 15, 30, 37, 45, and 60 cycles per minute; hinged, transparent safety cover; and a standard weight set of 2, 4 & 5.2 lbs. (an optional weight set of 3 & 5 lbs. is also available).

The Webbing Abrasion Tester has the capacity to test materials with a breaking strength over 13,500 N per ASTM D6770, MIL-W-23223B, US Department of Transportation FMCSA Part 571.209 and other internationally recognized test standards.

Abradants
Two (2) fresh edges of the abrasion bar should be used for each test. If only one specimen is being tested at a time, the next specimen can be abraded on a different part of the hex abrasion bar. Once the entire length of the bar has been utilized, it must be rotated to expose two (2) new edges. After the entire surface has been utilized the hex abrasion bar should be discarded and replaced.

Abradants
Two (2) fresh edges of the abrasion bar should be used for each test. If only one specimen is being tested at a time, the next specimen can be abraded on a different part of the hex abrasion bar. Once the entire length of the bar has been utilized, it must be rotated to expose two (2) new edges. After the entire surface has been utilized the hex abrasion bar should be discarded and replaced.

Evaluation
The most common evaluation technique for evaluating abrasion resistance of webbing material is to utilize a CRE-type tensile testing machine equipped with split-drum webbing clamps as described in Federal Test Method 191b, Method 4108.

Average Breaking Strength - For each sample lot, the average breaking strength should be calculated for both the abraded (A) and unabraded (U) lots. The average breaking strength is found by summing each individual sample's breaking strength and then dividing by the total number of samples in the lot.

Abrasion Resistance (AR) - Abrasion resistance is the percentage of retained breaking force after abrasion. The abrasion resistance can be determined using the following formula:

AR = 100 (A / U)

where AR = abrasion resistance (%)

A = average breaking force of abraded specimen, N (lb)

U = average breaking force of unabraded specimen, N (lb)
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