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http://www.mehrce.blogfa.com/post-111.aspx
[FONT=arial, helvetica, sans-serif]TÜV Austria, Vienna, Austria[/FONT][/FONT]
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http://www.mehrce.blogfa.com/post-111.aspx
Acoustic Emission: a Modern and Common NDT Method to Estimate Industrial Facilities
[FONT=arial, helvetica, sans-serif]Gerald LACKNER, Gert SCHAURITSCH, Peter TSCHELIESNIG
[FONT=arial, helvetica, sans-serif]TÜV Austria, Vienna, Austria[/FONT]
[FONT=arial, helvetica, sans-serif]Abstract. [/FONT]
[FONT=arial, helvetica, sans-serif]Particularly with regard to the effort of the industry to reduce the shut
[FONT=arial, helvetica, sans-serif]down time of industrial facilities, the desire for a practicable and economic NDT[/FONT]
[FONT=arial, helvetica, sans-serif]method for periodic inspection becomes more and more interest. In the last few[/FONT]
[FONT=arial, helvetica, sans-serif]years, the acoustic emission (AE) method achieved to fulfil this requirement. In[/FONT]
[FONT=arial, helvetica, sans-serif]addition to the enormous development on hard- and software-components for AE[/FONT]
[FONT=arial, helvetica, sans-serif]systems in the last years, the increase of practical experiences and knowledge leads[/FONT]
[FONT=arial, helvetica, sans-serif]to a wide range of applications for this test method in Europe and worldwide. On the[/FONT]
[FONT=arial, helvetica, sans-serif]other hand, the implementation of AE in the European standardisation assured a[/FONT]
[FONT=arial, helvetica, sans-serif]high quality of certified test personnel. Parallel to this, the evolution of product and[/FONT]
[FONT=arial, helvetica, sans-serif]process standards raised the acceptance of AE for industrial application. In many[/FONT]
[FONT=arial, helvetica, sans-serif]European countries, for example in Austria, the AE is settled in the national law for[/FONT]
[FONT=arial, helvetica, sans-serif]the periodic inspection of several types of storage and pressure vessels as well as[/FONT]
[FONT=arial, helvetica, sans-serif]piping systems.[/FONT]
[FONT=arial, helvetica, sans-serif]Amongst other, AE is able to detect and locate material defects, corrosion[/FONT]
[FONT=arial, helvetica, sans-serif]and leakages with a high sensitivity and accuracy and enfolded usually the overall[/FONT]
[FONT=arial, helvetica, sans-serif]shape of the tested structure. Due to this property, AE is particularly suitable as a[/FONT]
[FONT=arial, helvetica, sans-serif]test method for large structures. In the practice, the verification of suspect places[/FONT]
[FONT=arial, helvetica, sans-serif]detected by AE, will be done with other NDT methods (visual inspection, ultrasonic,[/FONT]
[FONT=arial, helvetica, sans-serif]radiographic a.s.o.). Together with the interpretation of the AE results, an accurate[/FONT]
[FONT=arial, helvetica, sans-serif]conclusion about the actual condition of the structure will be possible.[/FONT]
[FONT=arial, helvetica, sans-serif]The presentation describes the current situation of AE from the Austrian[/FONT]
[FONT=arial, helvetica, sans-serif]point of view and explains the interaction between different NDT methods based on[/FONT]
[FONT=arial, helvetica, sans-serif]the results of some practical applications[/FONT]
[FONT=arial, helvetica, sans-serif]down time of industrial facilities, the desire for a practicable and economic NDT[/FONT]
[FONT=arial, helvetica, sans-serif]method for periodic inspection becomes more and more interest. In the last few[/FONT]
[FONT=arial, helvetica, sans-serif]years, the acoustic emission (AE) method achieved to fulfil this requirement. In[/FONT]
[FONT=arial, helvetica, sans-serif]addition to the enormous development on hard- and software-components for AE[/FONT]
[FONT=arial, helvetica, sans-serif]systems in the last years, the increase of practical experiences and knowledge leads[/FONT]
[FONT=arial, helvetica, sans-serif]to a wide range of applications for this test method in Europe and worldwide. On the[/FONT]
[FONT=arial, helvetica, sans-serif]other hand, the implementation of AE in the European standardisation assured a[/FONT]
[FONT=arial, helvetica, sans-serif]high quality of certified test personnel. Parallel to this, the evolution of product and[/FONT]
[FONT=arial, helvetica, sans-serif]process standards raised the acceptance of AE for industrial application. In many[/FONT]
[FONT=arial, helvetica, sans-serif]European countries, for example in Austria, the AE is settled in the national law for[/FONT]
[FONT=arial, helvetica, sans-serif]the periodic inspection of several types of storage and pressure vessels as well as[/FONT]
[FONT=arial, helvetica, sans-serif]piping systems.[/FONT]
[FONT=arial, helvetica, sans-serif]Amongst other, AE is able to detect and locate material defects, corrosion[/FONT]
[FONT=arial, helvetica, sans-serif]and leakages with a high sensitivity and accuracy and enfolded usually the overall[/FONT]
[FONT=arial, helvetica, sans-serif]shape of the tested structure. Due to this property, AE is particularly suitable as a[/FONT]
[FONT=arial, helvetica, sans-serif]test method for large structures. In the practice, the verification of suspect places[/FONT]
[FONT=arial, helvetica, sans-serif]detected by AE, will be done with other NDT methods (visual inspection, ultrasonic,[/FONT]
[FONT=arial, helvetica, sans-serif]radiographic a.s.o.). Together with the interpretation of the AE results, an accurate[/FONT]
[FONT=arial, helvetica, sans-serif]conclusion about the actual condition of the structure will be possible.[/FONT]
[FONT=arial, helvetica, sans-serif]The presentation describes the current situation of AE from the Austrian[/FONT]
[FONT=arial, helvetica, sans-serif]point of view and explains the interaction between different NDT methods based on[/FONT]
[FONT=arial, helvetica, sans-serif]the results of some practical applications[/FONT]
[/FONT]