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The Istituto Italiano della Saldatura Group (IIS Group) boasts the availability of a of highly specialized and multidisciplinary technicians’ team that grows and lives breathing the air of a Company, the IIS Group itself,  which has in the last 70 years the fundamental mission, to support its customers in the various Industry fields.
Therefore, the IIS Group, within its Laboratory division and in real-time collaboration with its other specialized technical divisions, can represents a single Go-To reference to better clarify all the aspects connected to the failure of a component (how and why) and to define actions that can potentially be implemented as lesson learnt after the event of failure (corrective actions).

The in-depth approach of IIS to failure and root causes analysis studies is supported by a robust knowledge of Codes, Standards, Regulations applicable around the Industry.

>> The mechanisms
The most common damage modes/mechanisms that IIS failure analysis team faces every day include as “best seller”:

  • Mechanical damages
  • Generalized corrosion
  • Localized corrosion
  • Stress Corrosion Craking (SCC)
  • Microbiologically Corrosion (MIC)
  • Fatigue/Corrosion Fatigue.

>> The main causes
The origin (physical and root causes) of a bad event can be recognized in different phases of component life and at different levels of hierarchy of causes, each characterized by specific barriers against possible “failure”.

  • Design
  • Fabrication (e.g. welding, forming...)
  • Service
  • Maintenance
  • Knowledge
  • Organization.

>> In case of failure event
…a site inspection as timely as possible in the failure analysis process can be a focal point for first-rate results.

  • Site inspection
  • Interviews & data collection
  • Samples identification
  • Metallographic replica
  • Fractographic replica
  • Positive Material Identification (PMI)
  • Non-Destructive Examination (NDE).

Manage a failure event

IIS provides support services in case of litigation and arbitration. The 70-years life of IIS Group in the Industry as 3rd party source of proficiencies and expertise can guarantee:

transparency, credibility, reliability e competence.

Our role

IIS is widely recognized for its transparent, in-depth and independent third party approach to failure event investigations.


IIS has in-house availability of skills and expertises to perform a detailed analysis of failure events. Its technicians apply the most advanced methods, laboratory testing and modeling to determine the mechanism/mode of failure and the root cause/s of a bad event. Its experience is enriched/consolidated through a considerable number of failure analysis case histories in many different fields of the Industry with different levels of criticality.

Purpose & Benefit

Anytime a failure event occurs across the Industry (either due to corrosion or other damage mechanisms), a failure analysis and/or root causes analysis job can be of primary importance, especially if this is performed in timely and decisive way; the results of a failure analysis job can be "pro-actively" applied to mitigate the likelihood of future bad events, to increase safety, to optimize processes and as a tools for design  (e.g. material selection, geometrical details).


In case of failure event, IIS technicians and experts are present through both in-situ inspection activities and planning/execution of ad-hoc tests/analyses in the Laboratory. IIS failure analysis reports are prepared with the aim of being as complete as possible, focused on engineering aspects (answers for the industry!) and with worthwhile quality in the description of events/components and in the interpretation of the experimental results.