What's New | Link Engineering

Adapting to EPA Refrigerant Regulations: Tescor’s Expertise in HVAC Solutions

by IBT Online | Sep 25, 2024 | What's New

The Environmental Protection Agency (EPA) has recently introduced new regulations that are set to reshape the HVAC industry, particularly concerning the use of refrigerants and coolants. These changes are aimed at reducing the environmental impact of cooling systems...

Tescor, a Link Group Company Relocates Operations to New Facility

by IBT Online | Dec 19, 2023 | What's New

Tescor, a Link Group Company, is happy to announce the relocation of our operations to a modern manufacturing facility owned by LINK. As of December 2023, the Tescor team has been working out of the newly acquired state-of-the-art building, still located in...

Linsey Holden-Downes Named Managing Director of Tescor, a Link Group Company

by IBT Online | Aug 31, 2023 | What's New

LINK is excited to welcome Linsey Holden-Downes as Managing Director of our Tescor operations. Effective August 21, 2023, Linsey will oversee Link Group’s Tescor facility, located in Warminster, Pennsylvania, USA. Linsey graduated with a Master of Chemistry, achieving...

LINK’s Global Team of Experts Come Together for Largescale Customer Installation

by IBT Online | Jul 7, 2023 | What's New

As a collaborative effort between Tescor and Link Engineering Company, the Link Group, Inc. companies successfully installed a large drive-in chamber for new electric vehicle environmental simulation testing for a California-based customer. The cross-functional LINK...

Link Engineering Company and Maul-Theet to Enter Exclusive Strategic Partnership

by IBT Online | Feb 20, 2023 | What's New

PLYMOUTH, MI (February 14, 2023) – Link Engineering Company (LINK), a premier provider of customized testing equipment, and Maul-Theet, a leader in structural dynamics, are excited to announce that, effective February 2023, they have entered into a strategic...

New Release of the SAE J2521 for Disc Brake Dynamometer Squeal Noise Matrix Evaluation

by IBT Online | Feb 20, 2023 | What's New

In late 2022, SAE International published a new, revised version of the SAE J2521_200306. The procedure provides a laboratory test method for high-frequency squeal type noise evaluation on passenger cars and light duty truck type vehicles. The revision is broken into...

Link Engineering Company Announces the Acquisition of Xytek Industries Inc.

by IBT Online | Jan 17, 2023 | What's New

PLYMOUTH, MI (January 17, 2023) – Link Engineering Company (LINK), a global leader in customized testing solutions, is pleased to announce it has acquired the key assets and staff from Xytek Industries Inc. (Xytek), a Detroit, MI, company specializing in...

Calspan and Link Engineering Company Partner to Develop Innovative Tire Test Equipment

by IBT Online | Dec 14, 2022 | What's New

Calspan, a world leader in mobility, safety, and performance, and Link Engineering Company (LINK), a premier provider of customized testing equipment, are thrilled to announce they are joining forces to develop new, advanced technologies for tire testing. The...

European LINK Facilities to Transition Names to ‘Link Engineering Company’

by Megan | Jun 21, 2022 | What's New

PLYMOUTH, MI (June 21, 2022) – LINK is excited to announce that we have transitioned the names of our European operations to more closely align with our global business units and the overarching Link Engineering Company name. Our Germany locations currently known as...

Thomas Feng Named Managing Director of LINK China

by Megan | Mar 4, 2022 | What's New

LINK is excited to welcome Thomas Feng as Managing Director of our LINK China operations. Effective February 2022, Thomas will oversee the LINK Huangshan Vehicle Testing Center and the LINK Shanghai testing laboratory. Thomas graduated with a BS in finance from the...

Brakes

Type of Test	Test Highlights	Equipment Used	Example Procedures
Chemical Testing	Measurement of copper, asbestos and other elements in brake friction materials	ICP-OES / PLM	J2975
Materials Testing	Physical properties including quality control for friction, wear, compressive strain, shear strength, corrosion resistance, swell and growth	Chase Machine / Compressibility Machine/ Shear Machine / Corrosion Chamber / Environmental Chamber / Oven	J661, ISO 6310, ISO 6311, ISO 6312, ABNT NBR 9301, ABNT NBR 5505, ABNT NBR 5537, ASTM B117
Frequency Response	Component Frequency Response	Laser Vibrometer Test Stand	SAE J2933, J3001, J2598, L-4375
Structural Fatigue and Durability	Breaking strength, cyclic fatigue	Servo Hydraulics, Torque Flex	J2995, C419, C441, GMW18022
Caliper Fingerprinting	Caliper characteristics such as knockback, rollback, fluid displacement, deflection...	Caliper Test Bench / Brake Dynamometer	L-4177, PF.90257
Brake Drag and DTV	Residual drag, disc thickness variation, brake feel and vehicle fuel mileage	Off Brake Drag Stand / Brake Dynamometer	J2923, GMW14926, GMW14351, PF.90257, L-13080
Performance	Hydraulic, air and electric brakes, friction levels, stopping distance, corrosion, cleanability, brake torque variation, rotor cracking, regulation, stability control, coastdown	Brake Dynamometer, Model 4000 DAS	J2784, J2928 IS026867, GMW14985, PF.90210, PF.90244, L-405, FMVSS 121, FMVSS 122, FMVSS 105, FMVSS 135, FMVSS 126, FMVSS 136, ECE R13H, AMS
Wear	Rotor wear, drum wear, lining wear, DTV, durability, city traffic, suburban traffic	Brake Dynamometer, Model 4000 DAS	J2707, USCT, L-423, PF.90244, Los Angeles, Detroit, Phoenix, Birmingham, Marquette
NVH	Brake squeal during drag and decel events at different temperatures, pressure and torque levels	NVH Brake Dynamometer	J2521, L420, 1430, GMW17427, PF. 90244
Brake Emissions	Brake dust particle size, count, concentration and mass	Brake Dynamometer	WLTP, CARB, Duty cycle

Tires

Type of Test	Test Highlights	Equipment Used	Example Procedures
Parking Forces	Allows proper sizing of power steering components	Force and Motion	LINK Parking Forces
Tire Footprint	Determines the contact patch geometry	Force and Motion	Tire Footprint
Tire Modeling	Determine tire inertia which is then used Ftire and other models and simulations	Inertia Machine	LINK Tire Inertial Properties
	On-center parking effort test for Ftire input	Force and Motion	SWP
	Determine static stiffness (X, Y, Z, Alpha) for Ftire input	Static Stiffness Machine	SAE Static Stiffness
	Determine how the tire envelopes an obstacle	Cleat Machine	J2731
	Measure the forces and moments generated at a high frequency response spindle when the tire impacts a cleat	Cleat Machine	J2730
Braking and Cornering Performance	Determine the straight line braking performance of a tire	Force and Motion	J2673
	Determine the free rolling cornering properties of a tire	Force and Motion	SAE TIME, J1987, SWP
	Measure the combined cornering and braking performance of a tire	Force and Motion	J2675
Tire Stiffness	Measure rolling vertical stiffness of a tire at speed		Rolling Vertical Stiffness
Rolling Resistance	Measure tire rolling resistance using a drum	Force and Motion, Rolling Resistance	J1269, J2452
Tire Wear	Assess tire wear in the lab	Force and Motion	LINK Wear Test
Tire NVH	Test tire sizzle, cornering noise, pass-by noise, steering wheel dither, freeze crack impacts, high speed uniformity and imbalance sensitivity	Force and Motion, Dynamometer, Model 4000 DAS	Noise, Vibration, Harshness

Wheels

Type of Test	Test Highlights	Equipment Used	Example Procedures
Chemical	Evaluates filiform corrosion on painted aluminum wheels and painted aluminum trim	ICP-OES	ASTM E3061
Wheel Corrosion and Coatings	Evaluates filiform corrosion, tape adhesion, degree of rusting on painted aluminum wheels and painted aluminum trim	Corrosion Chamber	SAE J2635, ASTM B368, ISO 9227, ISO 2409, ASTM D3599, ABNT NBR 11003, ASTM D610, ASTM D1654
Wheel Fatigue	Load simulation test of aluminum alloy wheels	Biaxial	BMW QV36026, SAE J2562, FORD L-307, GMW14340
	Dynamic Cornering Fatigue and Dynamic Radial Fatigue - Steel wheels	Eccentric Mass and Radial	ABNT NBR 6750
	Rotational fatigue, Radial load fatigue and biaxial load fatigue of steel and aluminum wheels	Eccentric Mass, Radial and Biaxial	ABNT NBR 6751
	Dynamic Cornering Fatigue and Dynamic Radial Fatigue and Impact resistance of temporary use and normal highway use aluminum wheels	Eccentric Mass, Radial and Drop Test	ABNT NBR 6752
	Wheel Radial Fatigue	Radial	GMW14909
Wheel Impact	Wheel Inboard Rim Flange Vertical Impact	Drop Test	GMW15321
	Wheel radial impact	Drop Test	CETP 04.04-L300
	Wheel Lateral Impact	Drop Test	GMW14910, SAE J175
Wheel Stiffness	Frequency Response Function (FRF)	Frequency Response	GMW14876
Wheel Stiffness	Deformation of the wheel	Servo Hydraulics	J2315
Center cap heat resistance	Center Cap deformation under elevated temperature conditions	Bench Test	Brake Heat Center Cap

Hubs/Bearings

Type of Test	Test Highlights	Equipment Used	Example Procedures
Wheel Bearing	Water intrusion and durability when exposed to mud and salt	Bearing Test Stand	LINK Hub and Bearing, GMW16306, GMW16310
	Passenger car, sport/performance and open bed vehicle wheel bearing spalling	Bearing Test Stand	GMW16311, GMW16308, GMW16309
	Brinelling resistance validates long-term reliability/durability	Bearing Test Stand	GMW16305
	Rotary fatigue life	Rotary Fatigue Machine	GMW16325
Wheel Hub	Rotary bending fatigue life characteristics	Rotary Fatigue Machine	GMW14249
Hub/Bearing	Evaluate hub and bearing performance, durability, seals and NVH when exposed to extreme environmental effects such as temperature and mud/salt solution	Bearing Test Stand/Rotary Fatigue	TIP-000037A, LINK Hub and Bearing, SAE J1095, LINK Impact
Hub Fatigue	Hub fatigue using biaxial loading	Biaxial Test Stand	SAE J2562