• Electrical Discharge Sampling Equipment

  • Our Introduction

    AMCO Integrity Pty. Ltd is an independent company registered in Australia. It is a highly innovative engineering and consulting company engaged in state of the art R&D and product development in the energy sector, including renewable and small scale energies, and in high temperature plant issues in general…

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  • EDSE Technology

    The Electric Discharge Sampling Equipment (EDSE) was developed by our UK based partner in collaboration with international partners to aid in the condition and life assessment of components. The sampling of in-service components has long been seen as an effective way of determining actual material properties and sub-surface material
    condition.…

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  • Portable SFM Technology

    The Portable Scanning Force Microscope (Integrity-Scanning Force Microscope) has been developed for early stage damage detection such as creep cavitation (especially in P91 & P92 steels) which will not be found using traditional replication techniques.…

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  • Obikou

    Obikou is an on-site service for power, process and other high temperature plant and has shown to achieve creep life extension by a factor of about 4. It simply involves quickly reinforcing a potentially vulnerable or creep damaged pipe with multiple layers of thin high-temperature alloys strip that is wound/wrapped around a pipe thus halting/ reducing the development of creep damage….

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  • Research & Development

    AMCO has excellent expertise through its in-house R&D, plant service/technical
    consulting and project management experience and links with plant manufacturers,
    plant operators, service providers and researchers from around the world.

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The Electric Discharge Sampling Equipment (EDSE) was developed by our UK based partner in collaboration with international partners to aid in the condition and life assessment of components. The sampling of in-service components has long been seen as an effective way of determining actual material properties and sub-surface material condition. However, many of the existing methods of sample removal require mechanical cutting which can deform the surface and usually require weld repair.

Unlike the traditional mechanical ‘boat sampler’, with EDSE, the surface damage if any is of the level of only a few microns. Our partner has recently used EDSE for the sub-surface material characterisation and quality checks of new and in-service P91 components. EDSE can also be used to cut out specimens for small punch testing and miniature creep, fatigue or tensile testing for more accurate quantitative life assessment.

Industry Need

The most accurate way of determining an aged material’s condition is through non-destructive, physical testing. For a large plant component, this is obviously impossible without taking a sample. Without care, this sample can leave the component damaged with stress concentrations and a reduced wall thickness, shortening the service life.

The Solution

Based on the EDM process, the EDSE cuts out small, thin section of samples; leaving no sharp corners and without inflicting work hardening on the component surface. These samples can then be machined down to be used in creep, fatigue, tensile, toughness and hardness tests. The EDSE can cut out small slices between 1 to 20 mm thick and approximately 20mm2 or 40mm2 or 40mm x 120mm from thick section components for their remaining life evaluation and extension. The unique cutting process leaves behind cavities with round edges that do not require repair.

Advantages of EDSE

An advantage of the EDSE system is that the resulting cavity leaves rounded edges with a 4mm radius and no stress concentrations. The process of cutting uses a consumable electrode that removes material via electric spark erosion, with purified water to remove debris and provide a cooling medium. The cutting time for a standard specimen is about 1.5 hours and the EDSE can be used on horizontal, vertical and angled surfaces by either strapping to the component or through the use of a magnetic mount.