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Fracture Mechanics Using fracture science to minimize downtime & repairs

Fracturing of materials comprises a significant portion of unforeseen failure in the industrial world around us, and the art of controlling fractures is being continuously advanced by the development of designer-driven optimization and case-specific understanding of behaviour over the course of service.

The use of computational models is well established in many areas of engineering; and using the state of the art algorithms for failure modeling enables our engineers applying their creativity, expertise and skill to be optimal, more productive, and innovative when dealing with design for failure. Failure in welds is among the few fields where design, control, and optimization remains generally traditional and not yet well advanced computationally. Generally, a large variety of fracture resistance materials and structures are designed to tolerate failure such as fatigue, creep, rupture and so on. Yet, failure has been observed to occur in our structures after a relatively low in-service life and frequently reported in welds for a large portion of occurrences. The reason is because difference between the weld and parent materials are taken for granted in most disciplines of engineering. This is because fully understanding weld properties involves complex multiphysics solutions and therefore not many experts are up to the challenge of engineering a perfect weld.

Our team delivers a cutting-edge solution to your fracture analysis including case-specific algorithms that predict evolution of damage in weld in particular in the interface of weld and base metal i.e. fusion line. We offer a full spectrum of skills, capability, and experience in precisely computing fracture evolution using coupled damage algorithms on a case-by-case basis in order to make structural integrity decisions.

Our previous projects and experience include:

  • All-purpose Fitness for Service (FFS) assessment under API 579 and BS 7910 Level I, II, III, and full 3D structural damage assessment on service life.

  • Predicting 3D evolution of crack front and damage accumulation in a mixed loading of fatigue.

  • Critical assessment and determining the time to crack ignition, crack short and long growth, multiple crack coalescence, leak-before-break and ultimate failure.

  • Elevated temperature assessment and creep life prediction including computed 3D map of welding residual stress, PWHT, stress relaxation, coarse and fine grain HAZ, and welding flaw effect.

  • Integrating experimentation to the computational recipe for realistic prediction, build up special sample for extracting Compact Tension (CT) specimens and conducting fracture crack growth testing at custom-made loading, temperature and exposed environment.

    We are also the sole Canadian representative of Zencrack software (http://www.zentech.co.uk), the state-of-the- art software tool for 3D fracture mechanics simulation including non-planar crack growth prediction for fatigue and time-dependent load conditions. Our work with R&D team of Zencrack in UK led to developing an exclusive capability of growth prediction on metallurgical notch effect in material such as in weld fusion line.

    Our team of computational engineers are not only using general modeling software but experts in time-effective programing and scripting subroutines for custom-made numerical recipes in Abaqus platform. We are directly working with SIMULIA South to develop the Abaqus Welding Interface (AWI). We use computer and math algorithms to solve physics-based equations to make predictions and simulate scenarios for a variety of industries.

    We always deliver a practical solution to your fracture problems.