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1551
[Page extract]
Coefficient of friction (COF) explained
Understanding the COF formula
The coefficient of friction (μ) is a dimensionless value calculated as:
1552
Case study
Sachet compression test
Requirement
To compress six sachets of ketchup or mayonnaise until failure of the packaging occurred.
The peak compressive force was required as the test result.
1554
[Page extract]
Introduction to single lap shear testing
Single lap shear testing is a widely used method for determining the shear strength of an adhesive bond between two overlapping materials.
1555
[Page extract]
Calculating secant modulus
Accurate calculation requires stress-strain data, typically obtained from tensile, compressive, or
1556
Accessory
Wave jaws for Mec240k Medium Vice Grip, 2.5 kN, 30 x 100 mm
Mec240k-BW100
Wave Jaws (30mm x 100mm) - nickel-plated having a hardened steel surface of 5mm tall waves.
For flexible but slippy materials which need more surface contact to secure a good grip (e.g. textiles, fabrics and tissues).
Supplied as 0.5 set = 2 jaws (left…
1557
[Page extract]
Applications in industry
The Delft tear test is used wherever rubber and thermoplastics need to maintain performance under stress. Common uses include:
1558
Case study
Page pull strength test
Requirement
Mecmesin collaborated with a customer to design and develop a force measurement system to determine book binding adhesive strength in retaining individual pages.
1559
[Page extract]
ASTM D2919
This test method covers data for assessing the durability of adhesive lap-shear joints while stressed in contact with air, air in equilibrium with certain solutions, water, aqueous solutions, or other environments at various temperatures.
1560
Accessory
Pyramid (serrated) jaws for Lightweight Pneumatic Plane Grip, 200 N, 25 x 25 mm
Mec94-BP25
Pyramid Jaws (25mm high x 25mm wide) - nickel-plated having a surface of hardened steel pyramids of 1.2mm tall.
Opening span = 0 - 20 mm.
For materials which need a “bite” to secure a good grip (e.g. soft metals {aluminium, copper, soft steel, paper…
1561
Accessory
Wave jaws for Mec240k Medium Vice Grip, 2.5 kN, 30 x 80 mm
Mec240k-BW80
Wave Jaws (30mm x 80mm) - nickel-plated having a hardened steel surface of 5mm tall waves.
For flexible but slippy materials which need more surface contact to secure a good grip (e.g. textiles, fabrics and tissues).
Supplied as 0.5 set = 2 jaws (left…
1562
[Page extract]
ASTM F543-13
This specification provides requirements for materials, finish and marking, care and handling, and the acceptable dimensions and tolerances for metallic bone screws that are implanted into bone.
1563
[Page extract]
Controls that mean business
Personalised user accounts enable quick access to commonly performed tests, and restricts who can create or run tests, view results and produce reports.
1564
[Page extract]
Speak to an Expert
Compressive deformation testing is essential for ensuring material performance, safety, and compliance in industries from construction to sports manufacturing.
1565
[Page extract]
Introduction to yield point testing
Yield point testing is essential for understanding the mechanical behaviour of materials.
1566
Accessory
Rubber coated jaws for Mec154 Heavy-duty Vice Grip, 20kN, 40 x 100 mm
Mec154-BG100
Rubber-faced Jaws (40mm high x 100mm wide) - nickel-plated having 1mm thick layer of nitrile rubber coating.
Opening span = 0 - 28 mm.
For specimens, which may get weakened by pinching at the contact-edge of the grip. (e.g. films, filaments, fibres and…
1567
Case study
Cardboard beverage bottle carrier unfolding
Customised engineering example
A manufacturer of fully-enclosed cartons wanted to quality test the fold-out force for a variety of their designs, used mainly to package drinks bottles and cans.
1568
Accessory
Diamond coated jaws for Lightweight Pneumatic Plane Grip, 200 N, 25 x 25 mm
Mec94-BD25
Diamond Jaws (25mm high x 25mm wide) - nickel-plated having clamping surface coated with synthetic diamonds.
Opening span = 0 - 20 mm.
For materials which need a “bite” to secure a good grip (e.g. soft metals {aluminium, copper, soft steel, paper and…
1569
Accessory
Interface cable, VFG and VFTI to MultiTest-dV Oct 2015- Apr 2020
351-110
Gauge to stand (reverse/stop) & data transfer to stand
1570
Accessory
Pyramid (serrated) jaws for Mec227 Lightweight Vice Grip, 250 N, 10 x 25 mm
Mec227-BP25
Pyramid Jaws (10mm high x 25mm wide) - nickel-plated having a surface of hardened steel pyramids of 1.2mm tall.
Opening span = 0 - 8mm.
For materials which need a “bite” to secure a good grip (e.g. soft metals - aluminium, copper, soft steel, paper and…
1571
Accessory
Spare set of 15 needles for Shotcrete Penetrometer
432-519
Set of 15 Penetration Needles for use with the Mecmesin Shotcrete Pentrometer.
Needles fit into the needle-holder supplied as standard with the Shotcrete Penetrometer
1572
Accessory
Rubber jaws for Mec227 Lightweight Vice Grip, 100 N, 10 x 50 mm
Mec227-BG50
Rubber-faced Jaws (10mm x 50mm) - nickel-plated having 1mm thick layer of nitrile rubber coating.
Opening span = 0 - 4mm.
For fragile samples, which may get weakened by pinching at the contact-edge of the grip. (e.g. thin films, filaments, fibres and…
1573
[Page extract]
Step-by-step guide to conducting a CMT test
Prepare the specimen - Cut to size with clean edges, ensuring flutes remain undamaged, and condition as per the standard.
Calibrate the equipment - Check the load cell and platen alignment.
1574
Accessory
Wave jaws for Mec240k Medium Vice Grip, 2.5 kN, 30 x 30 mm
Mec240k-BW
Wave Jaws (30mm x 30mm) - nickel-plated having a hardened steel surface of 5mm tall waves.
For flexible but slippy materials which need more surface contact to secure a good grip (e.g. textiles, fabrics and tissues).
Supplied as 0.5 set = 2 jaws (left…
1575
[Page extract]
ASTM D3578
Scope... 1.1 This specification describes certain requirements for natural rubber gloves used in conducting medical examinations and diagnostic and therapeutic procedures. It also covers natural rubber gloves used in handling contaminated medical