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Facilities

Jost Institute for Tribotechnology (CM039)

Computing and Technology Building

AFM Dualscope from DME

The DME - Ratescope / Dualscope 200 is able to produce high resolution imaging of surfaces. From atomic resolution to 200 x 200 micron areas.

Topography imaging using Contact Mode, Tapping Mode and SPM Mode, Surface roughness analysis.

Force – distance analysis for local compliance, Lateral Force Microscopy (LFM), Electrical (IV) mapping.

Laboratory supervised by Dr Nathalie Renevier.

AFM Dualscope DME


Form Talysurf PGI 400 from Taylor Hobson

The ability to measure roughness, waviness and contour all at once on curved surfaces has become increasingly important for precision manufacturing. The University has acquired a well industrially established equipment from Taylor Hobson to achieve just that.

0.8nm – 12.8nm gauge resolution delivers world-leading contact surface finish measurement capability for a range of applications.

Fitted with Talymap software a 3D analysis software which facilitates a wide range of data manipulation.

Laboratory supervised by Dr Nathalie Renevier

Talysurf


Revetest from CSM

The equipment follows International standard EN 1071-3: 2001. Advanced technical ceramics – Methods of test for ceramic coatings.

Part 3: Determination of adhesion by a scratch test. Capable of applying forces in the range 1 to 60N to test adhesion and cohesion of hard coatings.

 

The equipment could be used for micro-hardness measurement, reciprocating wear testing for soft or hard coatings.

Laboratory supervised by Dr Nathalie Renevier

 

 

CSM Revetest


High Temperature Tribometer from CSM

 

The CSM Instruments High Temperature Pin on disk is a computer-controlled pin-on-disk tribometer with a heated sample holder.

The machine can perform the pin on disk test at a controlled sample temperature between room and 800 C.

Normal loads of 1, 2, 5 or 10N can be applied at rotation rates up to 1700 rpm. Samples must be diameter 55 x 10 mm.

The contact head is equipped with interchangeable styli (eg 6mm spherical steel, carbide or alumina; or cylindrical steel rod) to suit the surface under test.

Laboratory supervised by Dr Nathalie Renevier

High Temperature Tribometer from CSM


SEM SS40 from ISI fitted with EDAX

The Equipment has been recently refurbished and fitted with Energy Dispersive Analysis technique. Energy - dispersive X-ray spectroscopy (EDS, EDX, or XEDS) is an analytical technique used for the elemental analysis or chemical characterization of a sample.

Applications include materials and product research, troubleshooting, deformulation, and more. EDX systems are attachments to SEM and TEM instruments where the imaging capability of the microscope identifies the specimen of interest.

The data generated by EDX analysis consist of spectra showing peaks corresponding to the elements making up the true composition of the sample being analysed. It is possible to produce a surface map and assess the overall composition of a sample.

 

 

Accuracy of EDS spectrum can be affected by various factors. Many elements will have overlapping peaks (e.g., Ti Kβ and V Kα, Mn Kβ and Fe Kα).

The accuracy of the spectrum can also be affected by the nature of the sample. X-rays can be generated by any atom in the sample that is sufficiently excited by the incoming beam.

These X-rays are emitted in any direction, and so they may not all escape the sample. The likelihood of an X-ray escaping the specimen, and thus being available to detect and measure, depends on the energy of the X-ray and the amount and density of material it has to pass through. This can result in reduced accuracy in inhomogeneous and rough samples.

Laboratory supervised by Dr Nathalie Renevier

SEM SS40


Vacuum Pin on Disk

Forces in the range 1 to 10N can be applied at rotation rates up to 500 rpm and can reach a vacuum of 10-4.

Samples must be less than 20 mm. The contact head can be interchangeable.

The equipment is currently out of order for refurbishment.

Laboratory supervised by Dr Nathalie Renevier.

 

 

Vacuum Pin on Disk

 


 

Ball Crater from Teer Coatings

The BC-2 ball crater equipment is designed for producing a taper section on a coated sample to enable analysis of coating properties such as coating thickness, wear, interface sharpness, layer thickness and coating adhesion.

  • 30m Ball made of AISI 52100m Grade 25 Chromium steel
  • Polishing agent: 0.25 micron diamond paste
  • Output shaft: 3 to 12 rpm

Principle

The principle of the calo test is to determine the thickness of thin films. A hardened steel ball is turned in order to grind the layer.

Since main films are harder than the steel ball used, additional diamond paste is placed between the film and the steel ball. Once the film has been abraded off, the projection surface can be evaluated.

Laboratory supervised by Dr Nathalie Renevier

Ball Crater


Diamond Cutter from Struers

The Struers Minitom has been recently purchased. It is a small, automatic precision cut-off machine for sectioning all materialographic and ceramic specimens.

Minitom is very easy to operate, with fixation of the specimen and the setting of specimen size, cutting speed, and cutting pressure taking only a few minutes. The workpiece is fastened in a holder mounted on a movable arm.

Minitom is a small, low-speed, precision cut-off machine for sectioning all types of materials. Maximum specimen size: 30 mm dia. The cutting speed is continuously variable and the motor is designed to ensure that the selected speed remains constant at any load.

Diamond Cutter


Nano-Platform from Micromaterials

The University of Central Lancashire has a unique capability for the nanoscle assessment of mechanical and tribological properties of materials. The equipment is compliant with ISO 14577-2.

The platform allows a wide range of mechanical tests including:

  • Nano-scratch testing: Interfacial adhesion and cohesion
  • Nano-Hardness: Hardness, Modulus , Creep , Depth-profiling
  • Nano-Impact: Fatigue, Fracture toughness
  • Nano-wear: friction and wear resistance

 

The equipment is fitted with 4 optical objectives, acoustic emission sensors. Tests could be performed at room temperature or up to 400C.

Load applied may vary from 10 μN - 500 mN. There is a 3D simulation software.

Laboratory supervised by Dr Nathalie Renevier

 

 

 

Nanotest Platform

 


 

Pin on Disk from Tribotechnic

The Tribotechnic Pin on disk is a computer-controlled tribometer. The machine can perform rotating and sliding pin on disk tests.

Normal loads from 1 to 12N in dry conditions and 42/62N in lubricated conditions can be applied at rotation rates up to 300 rpm in rotating mode and 60 mm/s in sliding mode.

Samples must be between diameter 10-60mm x 2-15mm. The contact head is equipped with interchangeable styli (eg 6mm spherical steel or cylindrical steel rod) to suit the surface under test.)

Laboratory supervised by Dr Nathalie Renevier

Tribotechnic


WLI Micro-xam 10000

The University of Central Lancashire has invested in White light Interferometry, which is a non-contact optical method for surface height measurement on 3-D structures. This has surface profiles varying between a few micrometres and a few centimetres.

5000B 3d ADE Phase shift interference (3D optical measurement system based on whitelight confocal microscopy, measure optically complex surface structures while maintaining high vertical and lateral resolution).

Laboratory supervised by Dr Nathalie Renevier.

 

 

WLI Microxam


Trust Bearing

The test specimen should be 55mm diameter and 5-10mm thick. The specimen is fixed into the sample holder using a pin, and this assembly is inserted into the tester. Weights are added to provide the desired contact pressure with a maximum load up to 60kg, and the rotational velocity is set from 100 to 2000 rpm.

The test could be run either dry or lubricated. A break-in period, typically 40 hours, is run to ensure intimate contact between the mating parts.

The test sample is then weighed and measured, and the test begins. Contact pressure, rotational velocity (RPM), and the number of cycles (hours) must be specified for each test.

Wear rate can be calculated as either in./hour or grams/hour. Coefficient of friction is calculated as Torque / force x specimen radius. PV limit (pressure x velocity) is the point at which the material fails catastrophically.

Laboratory supervised by Dr Nathalie Renevier

Trust  Bearing


Hardness Tester

The Premium Micro-Vickers Hardness Tester 410/420 Series is a motorised turret with analogue or digital measurement microscope and easy to use integrated hardness calculator.

Features

  • Load ranges with 10gf - 1 Kgf or 10gf
  • Fully automatic 3 position turret for Micro Vickers /Knoop measurements:
    • 2 objectives and indenter (Vickers)
  • High resolution analogue or digital eyepiece
  • Conversion to Rockwell scales
  • Built in high speed printer
  • New user friendly display interface

Standard Delivery

  • Main Unit
  • Manual X-Y stage
  • Objectives 20x & 40x
  • Analogue eyepiece 15x
  • Vickers test block
  • Built-in thermal printer
  • RS-232 data output
  • 4 adjustable feet
  • Spare halogen bulb
  • Fuse
  • Installation & user’s manual
  • Ease way quality certificate


Tilted Pad

The Michell Pad Apparatus (TE99) is a bench mounting Michell pad apparatus to demonstrate the principle characteristics of a tilting pad slider bearing.

Shows the pressure distribution across the film of oil in a Michell tilting pad slider bearing. Helps to prove Reynolds equation for pressure gradient in fluid film.

  • Proven design, based on a machine created by the Department of Mechanical Engineering, Imperial College, London.
  • Accurately mimics a Michell tilting pad, fluid-lubricated slider bearing.
  • Helps to prove Reynolds equation for pressure gradient in a fluid film.
  • Includes a variable speed motor control
  • Fully adjustable pad (tilt) angle
  • Includes oil and a viscometer

Description

The Department of Mechanical Engineering (Imperial College, London), created the original design for this apparatus. It mimics a tilting pad fluid-lubricated slider bearing, invented by A. G. M. Michell. The bench mounting unit has an aluminium plate (pad) mounted above a continuous loop flat belt. The belt runs in an oil reservoir to provide a continuous supply of oil under the pad. This creates a pressurised film of oil between the pad and the belt.

A set of thirteen graduated tubes show the oil pressure across and along the film under the pad.
Included is a variable speed control to control the speed of the motor that turns the belt. Students vary the belt speed to find the relationship between sliding speed, oil viscosity and pressure distribution.

Two eccentric shafts hold the pad so students can adjust the angle of tilt of the pad. This helps students to find the relationship between pressure distribution and film thickness. Micrometres measure the leading and trailing edge positions of the pad.

Included with the apparatus is a container of oil and a viscometer to measure the viscosity of the oil.

Standard Features

  • Supplied with comprehensive user guide
  • Two-year warranty
  • Manufactured in accordance with the latest European Union directives

Experiments

Study of:

  • Pressure distributions in a tilting pad bearing
  • Influence of sliding speed and viscosity on the pressure distribution in the bearing and comparison with
    calculations based on Reynolds equation.
  • The relationship between pressure and the film thickness at the trailing edge of the pad.

Essential Services

Bench space needed:
1 m x 500 mm

Electrical supply:
Single-phase 230 VAC 50 Hz or 110 VAC 60 Hz

The speed control uses approximately 600 W maximum power.

 

Operating Conditions

Operating environment:
Laboratory environment

Storage temperature range:
–25°C to +55°C (when packed for transport)

Operating temperature range:
+5°C to +40°C

Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at 40°C

Sound Levels

Less than 70 dB(A)

Specifications

Nett dimensions and weights:

Main Unit: 650 mm x 650 mm x 400 mm and 20 kg

Motor Speed Control: 90 mm x 260 mm x 300 mm and 4.2 kg

Packed dimensions and weight (total):

0.3 m3 and 30 kg

Tilted Pad