destructive testing Metallurgical services

ARIES Mechanical Testing & Metallurgical Lab, providing wide range of Destructive testing’s & Metallurgical services to the Oil & Gas, Marine & Industrial sectors.

Aries Testing lab is well equipped with advanced testing equipment’s & in-house machine shop to conduct the testing as per ASTM, BS, BS EN, DIN, ISO or client/project specified standards with ultimate customer satisfaction.

ARIES Material Testing Lab is accredited by the latest ISO/IEC 17025:2017 from ENAS, Abu Dhabi (Range & scope, refer the latest certificates) Aries metallurgical team providing worldwide services in Consulting, Onsite Testing & Failure investigations through our branch offices and experts. We are well-equipped and experienced in Plant shutdowns & Asset integrity analysis. We do onsite replica metallography analysis on Boilers, Pressure vessels, Power generators, Marine engine, Critical plant equipment’s, Pipelines & Welded joints.

It's necessary to test in a Lab and measure the mechanical properties of engineering material before their intended application to elude unacceptable levels of failure or deformation. Laboratory testing determining the properties such as tensile characteristic, hardness, impact toughness, ductile to brittle temperature. Testing under various conditions are necessary for engineering & design applications. The results of Laboratory testing will reflect the material behaviour in ideal conditions.

We ascertain the mechanical properties with carefully designed laboratory test methods, data analysis and experienced personal’s interpretation.

ARIES Material Testing Lab is accredited by the latest ISO/IEC 17025:2017 from ENAS, Abu Dhabi (Range & scope, refer the latest certificates)

Aries mechanical testing lab is using standard test method to identify the basic properties of the materials like, yield point & elongation under uniaxial tensile load. This test will help to understand exact value of Yield Strength, Tensile Strength, % Elongation and reduction area of the material. Aries Testing Lab using Computerized Universal Testing machine to determine the mechanical properties of various ferrous and nonferrous metals .This value used to interpolate behavior of material during various type load condition.

  •  Uniaxial tensile testing
  •  Proof strength analysis for bolt.
  •  Full size tensile testing .
  •  Room and high temperature tensile testing.
  •  Tensile test for Plate, Pipe, Tube, Welded Sample

Testing Lab used to evaluate both the ductility and soundness of a material. It is often used as a quality control test for butt-welded joints, having the advantage of simplicity of both test piece and equipment. Aries Testing Lab using different bend re bend mandrill according to the standards and project specifications.

  •  Weld metal testing- Rebend / root / face / side bend test.
  •  Compression test.

In laboratory testing, Impact test validate the ability of material withstand during impact or sudden changes in load, it also help to find ductile to brittle transition temperature of the material, this will help to identify the materials behavior in low temperature application. Aries testing lab having the capacity to conduct the test from room temperature to various sub-zero temperature.

  •  Subzero temperature.
  •  Room temperature.

Aries Testing Lab using calibrated benchtop hardness testers to measure accurately the material’s resistance to localized plastic deformation..

  •  Rockwell Hardness Testing.
  •  Vickers Hardness Testing.
  •  Brinell Hardness Testing.
  •  Onsite hardness measurement.

Chemical Composition Analysis OES

Industries demand advanced elemental analysis of various metals importing from world wide manufactures and suppliers.The final inspection of products and quality is a main concern for most of the manufacturing , Marine , Oil & gas indstries.The reliability of resuts are critical for the success. Inconsistent analysis leads to expensive reworks. OES is the most trusted and widely used method for creation and verificaiton of mill testing reports worldwide.

ARIES using world leading Lab based Optical emisssion Spectro Equipments (OES) to analyze the different base materials. The latest laborotory analyzer from SPECTROMAXx & Mobile Optical Emission reveals the full chemistry of critical alloy elements at low detection limits.

The detection limits include Carbon (0.001) Phosphorus(0.0005), Sulfur (0.0002), Molybdenum (0.001) Nickel (0.0015) Chromium:(0.0005) Silicon (0.005) Nitrogen (0.001) etc. Our various base calibrations are capable to satisfy the test requirments of API 5L testing, API RP 578,ASME Section IX B & PV,ISO 17025 standards.

We use Portable Spectro analyzers at various sites for unknown material identification , Carbon steel metal identificaiton , SS grades 301 L , 304 L ,316 L, , 410 , 410 S material confirmation, complex shape analysis , welding consumables analysis, Oil field fittings & flanges analysis..etc

Our metallurgy Lab specialists offer complex onsite and laboratory based metallurgical analysis & failure Investigations according to customer needs.
We are specialized in Micro analysis, Replica Metallurgy, Fractography, Ferrite count, SEM , EDX , Corrosion study ,Case study, Investigation , Metallurgical consultation . The clients benefit expert evaluation and opinion of fracture, creep, fatigue, wear, deformation, contamination (trace analysis), corrosion control, materials..etc..

We offer detailed Metallurgical Testing & failure investigation, which will help to find out root cause in metallurgical point view.

  •  Ferrite testing by point count .
  •  ASTM grain size number .
  •  Weld characteristics .
  •  Depth penetration .
  •  Fusion – zone size and number of passes .
  •  Heat affected zone .
  •  Grain Size .
  •  Identification of ferrite and Sigma Phases .
  •  Case Depth and Plating Thickness measurement .
  •  De-carburisation .
  •  Nitride Case Depth .
  •  Heat Treatment Evaluation .
  •  Nodularity/ Nodule Count .
  •  Area Fraction .
  •  Linear Measurement .
  •  Grain Flow .
  •  Surface Condition .
  •  Residual stress measurement .

We Aries, extends our services in Corrosion testing focusing to provide our clients with early detection of corrosion and minimizing the failures in materials that are subjected to face corrosion. It’s a challenging scenario in many industries especially in oil and gas fields that are caused by corrosion effects. It’s an apt option to test these materials before that are being installed. So we would like to recommend Corrosion testing and proper evaluation by our team as per recognized standards.

The metal and alloys are made up of grain, in micro level the structure is separated by grain boundary. Intergranular corrosion is preferential attacks on the grain boundary where grain remain largely unaffected. This type corrosion occurred due to segregation of impurity (precipitation of nitrides, carbides, and other intermetallic phases, such as sigma phase) on the grain boundary. Such precipitation can produce zones of reduced corrosion resistance in the immediate vicinity.

This mainly occurs with incorrect heat treatment service, materials are liable to crack or fail by intergranular corrosion (IGC) much more rapidly than properly treated materials. In any case the mechanical properties of the structure will be seriously affected. Aries can carry out testing as per ASTM A262, ASTM A923, ISO 3651 and ASTMG28 standards.

During services if the material exhibits localized pits or gaps on its surface, pitting or crevice corrosion may be the culprit. Pitting corrosion is characterized localizes pit holes, and crevice corrosion occurs where two materials meet. Material resistance to pitting and crevice should be assessed before its usage. Aries provide pitting and corrosion test based on ASTM G48 .

Aries laboratory is fully equipped with latest methods of testing in compromise with relevant standards of testing. We perform Sulphide Stress Cracking (SSC) testing of metals subject to cracking with simultaneous effect of tensile stress and corrosion in the presence of wet media and H2S environment as per NACE TM 0177 standard.

As per this test, the metals are subjected to tensile stresses for resistance to cracking failure in low-pH aqueous environments containing hydrogen sulphide (H2S).This type of corrosion is hazardous and often unpredictable so its suggested to have proper inspection of your materials to ensure quality and endurance.

We performs and evaluate carbon steel, low alloy steel and corrosion resistant alloys for sour service applications as per,NACE TM 0177 standard methods: Tensile Test, Bent-Beam Test & Ring Test. We execute Hydrogen Induced Cracking (HIC) testing to evaluate the susceptibility of low alloy steel and carbon steel to hydrogen embrittlement. Hydrogen Induced Cracking (HIC) testing is recommended to evaluate the resistance of pipeline and other materials to hydrogen induced cracking corrosion caused by hydrogen absorption from aqueous sulphide corrosion. The test is duly performed in accordance with NACE TM0284-2011. After the test the specimens are evaluated, examined microscopically and cracks if present, are reported and their ratios CSR (Crack Sensitivity Ratio), CLR (Crack Length Ratio), CTR (Crack Thickness Ratio) are calculated.

Heat treatment is carried out to alter the mechanical and physical property of the metals. The controlled heating and cooling of metals allows us to achieve desired mechanical property. Heat treatment is also carried out due to manufacture process such as welding, hot forming etc. to regain its material property.
Aries can help to develop heat treatment cycle to achieve desired property of material with precise heating and temperature control. We are helping to develop in heat treatment cycle such as solution annealing, quenching, tempering etc.

Residual Stress Residual Stress

Residual stresses are as those stresses that remain in a body after removing the external load. These stresses influence the behaviour of mechanical components and can affect their structural and dimensional stability as well as the fatigue and fracture resistance of the materials. A residual tensile stress actually facilitates crack propagation and therefore reduces the fatigue life of a mechanical component. Residual stresses limit the loading capacity and safety of mechanical components during operation and in certain conditions it is necessary to know the quantity of those stresses.

Virtually all manufacturing and fabricating processes — casting, welding, machining, moulding, heat treatment, etc. introduce residual stresses into the manufactured object. Another common cause of residual stress is in-service repair or modification. In some instances, stress may also be induced later in the life of the structure by installation or assembly procedures, by occasional overloads, by ground settlement effects on underground structures, or by dead loads which may ultimately become an integral part of the structure.

Sometimes alone and some-times in combination with other factors, unaccounted for residual stresses have caused the failure of major bridges, aircraft, ships and numerous smaller structures and devices, often with substantial loss of life. At other times, residual stresses are deliberately introduced to provide beneficial effects, such as in pre-stressed concrete, shot-peening and cold hole-expansion.

Aries have the capability to quantify the residual stress using non-destructive portable equipment. On site field measurement and laboratory-based measurement also can be carried out using this NDT method.

Residusl Stress on Wheels

The presence of high residual stress in Railway wheels & Crane wheels are the main causes of cracks that may result in severe issues during the wheel’s services life.The Railway industry and other vehicle industries is required to ensure that stress levels present in wheels are with acceptable limits defined by the category of the wheel under study. A premature diagonosis can prevent dangerous and costly situation. We are using EMAT technology as a solution for measurement of residual stress in wheels by a reliable easy and fast method.

EMAT (Electro Magnetic Acoustic Transducer) Technology is weidely used in multiple applications

  •  Its capable of generating ultrasound directly within the material under inspection
  •  Dry Inspection, No Couplant ins required
  •  Inspection through paining and coatings
  •  No surface preperation is required
  •  Unique wave modes
What Causes Residual Stress?
  •  Residual stress can be induced due to welding
  •  Residual stress can be developed on structure component in service
  •  Manufacturing and fabrication process introduce residual stress (Casting, Molding, Machining, Plastic deformation by Bending, Rolling, Forging, Wheels, Pressure vessels, Oil Tanks etc)
  •  Estimation of stress created by heat treatment process
  •  Stress measurement from in-service pipeline
  •  Residual stress could be caused by localized yielding of the material , due to sharp notch or certain surface treatments like shot peening or surface hardening
  •  Failure analysis of component.
  •  Thermal residual stresses are created due to differential expansion when a material is heated or cooled
  •  When any object is formed through cold working , there is the possibility to develop residual stress
What residual stresses can cause
  •  Residual stresses can result in visible distortion of a component and lead to a failure
  •  Residual stresses can cause a metal part to suddenly split into two or more pieces after it has been resting on a floor without external load being applied
  •  Residual stresses relaxation can deform a peace when it is in machining
Residual stress measurement
  •  Stress due to external loads can be calculated with a degree of accuracy, but residual stresses are difficult to foresee. Therefor it is important to have a reliable method able to measure directly with minimum damage to the surface
  •  Residual stresses can play an important role in explaining and preventing failure of a component
  •  Residual stresses relaxation can deform a peace when it is in machining
  •  ARIES use ultrasonic portable equipment to measure the Residual stress from a component without any destruction of the material

Scanning electron microscope & energy dispersive x-ray spectrometer Scanning electron microscope & energy dispersive x-ray spectrometer
Scanning electron microscope & energy dispersive x-ray spectrometer

Scanning electron microscopy (SEM) is a well-known non-destructive technique that uses an electron beam probe to analyse samples surface down to nano-scale. The scanning electron microscopes produce high magnification images with high resolution, a feature of which makes them suitable tools for a wide range of applications in numerous fields of science and industry

The scanning electron microscope allows to image specimens at high magnifications using a number of different contrast mechanisms .Magnification ranging from 20X to approximately 30,000X, spatial resolution of (50 to100 nm). The SEM analysis is critical in all fields that require characterization of solid materials, geological applications

Analytical SEM with EDS help to achieves fast analysis of material characterization and elemental analysis. SEM-EDS uses to analyses various type of samples and reveal critical information’s containing external Morphology, Chemical compositions, Crystalline structure, Multi-layer coatings/paints and orientation

The energy dispersive x-ray spectrometer (EDS) allows the collection of qualitative and quantitative information about the elemental composition of spots and regions of interest

Applications
  •  Scale analysis
  •  Corrosion product analysis
  •  Failure analysis
  •  Fractographic analysis
  •  Identification of surface defect at micro and Nano level
  •  Layer Thickness measurement of composite material and coating
  •  Coating failure analysis
  •  Biological sample analysis
  •  Morphological identification of microorganisms
  •  Trace element analysis
  •  Particulate and contaminant on and within the material
  •  Soil analysis for mineral identification
  •  Particle and grain size measurement for soil
  •  Assisting Air pollution particle analysis
  •  Identification of wear particles found in production lines
  •  Quality control of food product packaging and production
  •  Sediment analysis of oil
  •  failure analysis of electronics and integrated circuit