This paper deals with the study of damage produced during freeze-thaw (F-T) cycles using two non-destructive measurement approaches-the first approach devoted to continuous monitoring using embedded sensors during the cycles, and the second one, performing ultrasonic imaging before and after the cycles. Both methodologies have been tested in two different types of concrete specimens, with and w...

In this research, the methods of conducting a survey building structures cultural heritage objects by non-destructive testing are considered on example newspaper “Izvestia”, located at address: Moscow, Pushkinskaya pl., 5. The main problems that an engineer faces when these highlighted. causes have been identified. influence disclosed entire process surveys and commissioning is noted. ways solv...

Identifying appropriate applications for technology to assess the health and safety of bridges is an important issue for bridge owners around the world. Traditionally, highway bridge conditions have been monitored through visual inspection methods with structural deficiencies being manually identified and classified by qualified engineers and inspectors. More advanced and objective bridge inspe...

It has been recognized for many years that application parameters and human factors, as described in the Reliability Formula proposed at the First European-American Workshop on NDE Reliability, are limiting factors in the performance of non-destructive evaluation (NDE). Experiments to determine the probability of detection (POD) for specific NDE applications are often designed and performed in ...

 The main purpose of the paper is to present the new convenient, reliable and affordable possibilities of the Internet to use software as a service for the solution of complex measurement problems in quality control. The focal point is directed on innovative vision sensor systems for fast, contactless and non-destructive measurements of dimensions and colours. For these systems new developed i...

The process industry is increasingly making use of Risk Based Inspection (RBI) techniques to develop cost and/or safety optimal inspection plans. This paper makes use of the gamma stochastic deterioration process to model the corrosion damage mechanism. This model is successfully extended to update prior knowledge over the corrosion rate with imperfect wall thickness measurements. This is very ...

Non-destructive testing (NDI) techniques are routinely used in bridge inspection. However, detection accuracy, accessibility, cost and consequences of false indication are all factors to consider when selecting the NDI techniques to be used. A probabilistic method is proposed to help select the most suitable NDI technique and an associated optimal schedule for fracture-critical member/detail in...

All vessels and offshore units require regular inspections to prevent structural or functional damages. Periodical inspections are based on classification society’s requirements and include both visual surveys and non-destructive test interventions, to look for structural damage, pitting, corrosion, thickness measurement, usually documented by measurements or images. Different approaches of ins...

Phased-array technology is being more and more adopted in the field of ultrasonic non destructive testing because of its enhanced flexibility over conventional monolithic probes. The most common abilities of steering, focusing and electronic scanning have been largely described; they allow faster inspection times or inspection of components with limited accessibility. Although these techniques ...