905-760-9322 sales@agmcontest.com

Department for

Mechanical Testing & Machining
Within our fully equipped department for mechanical testing we perform a number of standardized and custom designed tests.  All testing is performed in the environmentally controlled facility.

Intro

Mechanical Testing

If you want to have your products tested using mechanical testing services then there are various techniques and procedures they will be subjected to to ensure that they are fit for purpose and in good condition for your customers and everything from the joints to the materials to the function will all be tested individually and together.

Firstly mechanical testing services will test the actual material itself. This will be achieved using bend testing to test whether the material can be bent or whether it will snap or break, as well as using Charpy impact testing services which will grade the material as ductile or brittle and look at the amount of pressure it can receive without breaking. A temperature threshold will also be discovered to look at the heat at which the material changes from ductile to brittle. Similarly the areas that have been welded will be tested using non-destructive weld testing services such as ultrasonic weld testing. At any point where the products fail then failure analysis will be used to identify why and how to change this.

Mechanical Testing Services

Multiple Facets

Mechanical testing services are services designed to test the structural integrity of a range of mechanical structures and designs for both industrial and commercial use. These then test that the product or equipment is fit for purpose and safe to use, and that it won’t break under its intended load.

There are many different aspects of any mechanical structure that can conceivably fail under a load. As such mechanical testing services use many different techniques to test the range of components. For example the material itself will be tested for ductility or durability using tests such as Charpy impact testing services. This uses a pendulum to test how the material reacts to impact. At the same time this Charpy impact testing can be used to test how the material changes under different temperatures and to identify the temperature at which the material becomes more brittle or otherwise changes in its behaviour. Chemical analysis of steel services will meanwhile will analyze the precise chemical composition of the materials being used.

Mechanical testing services also need to look at other elements of a mechanical structure. This includes for example the things bonding the materials together (very rarely is a mechanical structure designed from a single sheet of a given material). For example mechanical testing services include weld inspection testing services. Weld inspection testing services will then look at testing the strength of welding, normally using non-destructive testing (NDT) which includes things such as ultrasonic non-destructive testing. This uses ultrasonic sound to asses welding for cracks or imperfections and thereby is able to spot any welding that does not meet industry requirements and that could potentially break under the loads it is expected to bear.

At the same time materials are also often bonded using fasteners such as bolts.

These fasteners too much be tested using proof load strength of fasteners services to ensure that the fasteners are capable of holding strong under the pressure they are designed to withstand.

Many other aspects of mechanical design and structural integrity are also measured – for example a structure’s dispersal of weight and it’s balance. Mechanical testing services will cover the full range of different services to test every aspect of your product or equipment. In some cases, should a piece of machinery, equipment or product fail, then failure analysis services will be employed to identify the cause of the failure and to prevent it occurring in future. Failure analysis services have the benefit of being able to act in a forensic way, and the weak points in the structure will already have been exposed.

For a business then, these mechanical testing services have countless benefits – preventing accidents in the work place, and also ensuring that the products the company put out are fit for purpose and safe for commercial use. This is important from a moral perspective, but also saves the company a lot of money and bad PR.

For example if a piece of equipment were to fail in the workplace it could lead to an injury and a member of staff having to take paid leave. They might also sue the company. Of course at the same time the equipment itself will have to be replaced which will also eat into the company profits.

Meanwhile should a product of your business fail in the commercial market, then this could cause injury to a member of public. Again your business may well be called to pay compensation for any injury or property damage and this will damage your profits. At the same time though, if this is to get out into the media, or even just spread through word of mouth, then it will damage the reputation of you business and your products will be seen as unsafe or dangerous.

At the same time though mechanical testing services take an important role for the general public and consumers in ensuring that the products and equipment they use is safe and reliable and thereby avoiding injury or accidents.

Tensile Test
[Round / Flat / Tubular / Welded Specimens]

  • Standard test results
  • Plastic Strain Ratio, r-Value
  • Cold Working Exponent, n-Value

Tensile testing is a form of mechanical testing services used to calculate the tensile strength (also known as ‘ultimate strength’) of a material. This tests the maximum amount of force that a material can withstand while being pulled from either end before ‘necking’ (necking is a form of tensile deformation where lots of strain will localize in one area of the material resulting in a part of the material straining more than the rest and creating a visible ‘neck’ in the sample – this neck will then become weaker and eventually be prone to snapping completely). This then, like other forms of mechanical testing, can be used to dictate the use of the material and to test suitability for particular applications.

Like other forms of mechanical testing services, often the tensile strength will be recorded qualitatively as falling under the category of ‘brittle’ or ‘ductile’ and this at a glance can help to dictate the material’s use.

Normally testing will involve taking a small sample of the material which will have a fixed cross-section area where necking is likely to occur. The material is then pulled using a controlled but gradually increasing force until the point at which the sample changes shape and necking occurs, or a which it completely breaks.

During tensile testing of metals, indentation hardness will correlate linearly with tensile strength. This relation allows for the economical testing of bulk metal using lightweight and portable equipment.

Fasteners
  • Axial and Wedge Tension Test
  • Proof Load Test

 

Bend Test

Bend testing is one of many mechanical testing services used to test the strength of a material and it’s ductility when placed under pressure. This then helps to advise manufacturing companies and designers on which metals are suitable for use in which products and how products using certain materials should be used. Here essentially the material will be subjected to testing and it will be recorded what the amount of pressure required is for it to bend and for it to eventually break. After the item is bent, the material will be inspected for cracks etc on the outer surface. In other cases bend testing can be carried out with three or four points in the bend to test the material’s properties under particular circumstances.

To begin with the test material will be cut into rectangular bars. In other cases the bend testing will be used on whole samples of the material as they are intended to be used. This is often the case with microelectronics applications.

Bend testing essentially does what it says on the tin and involves testing a material’s ability to bend. This has many uses in engineering and allows the user to determine how much weight the item can bear and whether it will snap at a certain point beyond this or simply distort.

Bend testing generally uses what’s known as the three point bending flexural test and this will provide precise values for the ‘modulus’ of elasticity. The three point bending flexural test essentially refers to the material being bent as we would expect it to be – by either end being clamped in position while pressure presses down on the centre. This will then slowly bend the centre of the material until it snaps, thereby revealing the flexibility of the substance. This is the easiest way to load a material.

One downside of this method of course is that it is destructive meaning that the material will lose its shape and won’t be re-useable in its current form. At the same time the results are sensitive to many confounding factors such as the precise positioning of the material and other aspects.

Guided Bend Test
Ductility of Welds
Ductility

Ductility in metallurgical laboratory services is a concept used to measure how brittle a material is. Ductility is tested metallurgical laboratory services then in order to test how durable a material is and how it will break when it does. The more ductile an object the more it will be able to be deformed before breaking or fracturing. This is very similar to another concept ‘malleability’ also used in metallurgical laboratory services in or to measure how much an item can deform under pressure. It is worth noting that ductility and malleability do not always correlate – for example while gold is both ductile and malleable, lead is only malleable. However the terms are often incorrectly used interchangeably.

It’s important for any company or business to test the ductility of their equipment and their products to ensure that they are fit for purpose and to prevent potential accidents and lawsuits. This is important both from a moral standpoint, but also from a business perspective being a sensible investment that will save you money in future.

The Ductile/Brittle Transition Temperature

The ductile-brittle transition temperature is the temperature at which a material will become brittle from ductile. The terms ‘brittle’ and ‘ductile’ refer to the way in which the materials either deform or fracture under pressure. Where they deform they can be called ductile, and where they break on a flat surface they will be called brittle.

This measurement is obtained using Charpy impact testing services in which a large pendulum is used to strike a sample sheet of the material at different temperatures. Of course it is quite hard to measure a ‘precise’ temperature at which the material changes as many materials will show a more gradual effect (some material will show a more gradual effect than others). In some cases then the Carpy impact testing services will strictly count the transition temperature at that where the fracture caused is a certain size (though this is a quick way to get through a lot of material).

Such mechanical testing services are highly important to ensure that products and equipment are not only reliable at room temperature, but also for use in hotter and colder climates.

Bend Test of Metallic Materials
  • for Spring applications

 

Compression Test
Notched Bar Impact Test
(Charpy V-notch)

  • at room and sub-zero temperatures

 

Hardness Test
  • Rockwell A-, B-, C-, and Superficial N-, T-Scales

 

Micro-Hardness Test
Customized Mechanical Tests
Machining / Preparation of Specimens
Flatten Flare Test
Welded Products
Shear Test
3 Point Bend Test Spring Application

Mechanical Testing Services

An Investment

Mechanical testing services are any services that test the reliability and strength of mechanics in a range of situations that it can be expected to undergo. Usually these tests will be designed in order to find the threshold for that device so that you can find out just how hard the item can be pushed without it failing. For example, a helicopter manufacturing company might use mechanical testing services to test the strength of individual welds and materials making up the helicopter, and to take the vehicles for a spin where they would undergo the most impressive and daredevil-esque manoeuvres that they are capable of. This is not something that you would be able to achieve yourself normally without some understanding of how mechanical testing services work, and it has many important benefits for a company putting out a mechanical product that will ensure the product is as reliable as it can be and thereby saving your business money in the long run and abiding by a moral imperative.

There are many ways in which mechanical testing services provide an investment. First of all, by testing the mechanical structures you will enable yourself to release a product that will fit a description and prove reliable. For example a gym company might use mechanical testing services such as charpy impact testing services or weld inspection to ensure that a weights bench can bear a certain load. This way the company could release the bench and include on the box or in the instructions what the maximum load is. As such the buyers would be able to use the item thusly and be sure that it wouldn’t break (though you should always ‘under estimate’ the abilities of a mechanism before you sell it). The same could be said by any metallic or mechanical item. This of course then means that you know the product will stand up to punishment as can be expected which will mean fewer items returned that have to be replaced (which is a costly business for any company). At the same time this will reflect well on the company, and if you produce quality materials then customers will be more likely to use your service in future, to write good reviews online, and to rave about your services to friends and family.

Of course though if you have a mechanical product such as a vehicle or something that is required to bear loads, then the object breaking is likely to do more than simply result in an item that needs to be brought back, and may well also cause injury to your customer which will be very bad for publicity. Further, if they choose to sue or take out a law suit then this will likely cost you thousands. Of course regardless of this, most of us would be highly traumatised to learn that our product had caused someone serious injury.

It’s also important to get mechanical testing on the tools and machinery that your staff use to perform their tasks and this is an area that many companies forget. If your staff work in a factory for example then it’s crucial that you ensure that all elements of that factory are in fully working order to prevent your staff being injured. Again this is very serious from a moral perspective when your employees will be placing their care in your hands. At the same time though it is again also important from a business sense as you might again face lawsuits otherwise, as well as lots of sick pay where you will be paying for labour that you’re not getting (with only yourself to blame). As such then, mechanical testing is an imperative that is both good business sense and the right thing to do for your staff and your customers.

For example if a piece of equipment were to fail in the workplace it could lead to an injury and a member of staff having to take paid leave. They might also sue the company. Of course at the same time the equipment itself will have to be replaced which will also eat into the company profits.

Meanwhile should a product of your business fail in the commercial market, then this could cause injury to a member of public. Again your business may well be called to pay compensation for any injury or property damage and this will damage your profits. At the same time though, if this is to get out into the media, or even just spread through word of mouth, then it will damage the reputation of you business and your products will be seen as unsafe or dangerous.

At the same time though mechanical testing services take an important role for the general public and consumers in ensuring that the products and equipment they use is safe and reliable and thereby avoiding injury or accidents.

Get In Touch

116 Viceroy Road, Building C, Units 11-12, Concord ON, L4K 2M3
905-760-9322
sales@agmcontest.com

AGM CON-TEST:

116 Viceroy Road, Building C, Units 11-12, Concord ON L4K 2M3

phone: 905-760-9322

sales@agmcontest.com

General Manager:

Milo M. Banda B.Sc., M.Sc., P.Eng.

milo@agmcontest.com