NDT Inspect – NDT Career and Community Portal | Failure Mechanisms | Activity

kenton started the discussion Amine cracking in the forum Failure Mechanisms

Sat, 04 Feb 2023 03:58:22 +0500

Amine cracking can occur in carbon steel pipelines, which are commonly used in the oil and gas industry. The degradation of amine-based chemicals can lead to corrosion in the pipelines, causing the steel to degrade and potentially leading to leaks and other operational issues. This is why proper selection and use of amine-based chemicals, as…

NDT-Inspect started the discussion Weld cracking and types of cracking in the forum Failure Mechanisms

Fri, 06 Jan 2023 06:02:21 +0500

Weld cracking and types of cracking

Weld cracks can form due to a variety of factors, including:

Poor design of the welded joint: If the welded joint is not properly designed to handle the stresses it will be subjected to, it can be more prone to cracking.
Improper welding techniques: If the welding process is not performed correctly, it can result in weld cracks. This can be due…

NDT-Inspect started the discussion Examples of disasters that have been caused by weld cracking in the forum Failure Mechanisms

Fri, 06 Jan 2023 05:59:58 +0500

Examples of disasters that have been caused by weld cracking

In 1979, a weld failure caused a gas pipeline explosion in Allentown, Pennsylvania, that killed at least 22 people and injured more than 50 others.
In 1980, a crack in a weld on a tanker ship caused a spill of over 10 million gallons of oil in the Gulf of Mexico, which is considered one of the worst oil spills in history.
In 1981, a weld failure…

NDT-Inspect replied to the discussion Corrosion in the forum Failure Mechanisms

Sat, 24 Dec 2022 03:31:21 +0500

Reply to Corrosion

Corrosion is a major concern in offshore platforms, as it can lead to costly damage and failure of equipment. Offshore platforms are exposed to harsh and corrosive environments, including saltwater, extreme temperatures, and high humidity, which can accelerate the corrosion process.

There are several types of corrosion that can occur in…

NDT-Inspect started the discussion Corrosion in the forum Failure Mechanisms

Sat, 24 Dec 2022 03:30:04 +0500

Corrosion

Corrosion is a major concern in the oil and gas industry, as it can lead to costly damage and failure of equipment. Understanding the different types of corrosion and how they occur is essential for preventing and mitigating their effects.

There are several types of corrosion that can occur in the oil and gas industry, including:

General…

NDT-Inspect started the discussion Fatigue embrittlement in the forum Failure Mechanisms

Mon, 12 Dec 2022 07:19:37 +0500

Fatigue embrittlement

Fatigue embrittlement is a type of failure mechanism that can occur in materials under certain conditions. It is a process by which materials become more brittle and susceptible to failure as a result of repeated loading or stress.

Fatigue embrittlement typically occurs in materials that are subjected to cyclic loading or stress, such as in…

NDT-Inspect started the discussion Step-wise Cracking in the forum Failure Mechanisms

Mon, 12 Dec 2022 07:18:25 +0500

Step-wise Cracking

Step-wise cracking is a type of failure mechanism that can occur in materials under certain conditions. It is a process by which cracks form and propagate in a material in a step-by-step manner, leading to the eventual failure of the material.

Step-wise cracking can occur in a variety of materials, including metals, polymers, and ceramics. It…

NDT-Inspect posted an update in the group Failure Mechanisms: Failure mechanisms, also known as failure modes, are […]

Wed, 07 Dec 2022 11:03:25 +0500

Failure mechanisms, also known as failure modes, are the specific ways in which a material or component can fail or be damaged. Failure mechanisms are typically classified according to the type of failure that occurs, such as fracture, fatigue, corrosion, or wear.

Understanding failure mechanisms is important for predicting the behavior…

NDT-Inspect posted an update in the group Failure Mechanisms: Caustic CrackingWhat Does Caustic Cracking […]

Sat, 22 Oct 2022 06:30:56 +0500

Caustic Cracking

What Does Caustic Cracking Mean?

Caustic cracking is a form of stress corrosion cracking most frequently encountered in carbon steels or iron-chromium-nickel alloys that are exposed to concentrated hydroxide solutions at temperatures of 482°F (250°C).

This phenomenon mostly occurs in boilers where caustic soda (NaOH) has been added…

corrosionpedia.com

What is a Caustic Cracking? - Definition from Corrosionpedia

This definition explains the meaning of Caustic Cracking and why it matters.

NDT-Inspect posted an update in the group Failure Mechanisms: SPEED Makes This Warship CRACK!Interesting video […]

Tue, 07 Jun 2022 13:40:22 +0500

SPEED Makes This Warship CRACK!

Interesting video regarding warship cracking and also general fatigue cracking in material

https://www.youtube.com/watch?v=7UMjcXAJCoI

mohamed-ali-bagath joined the group Failure Mechanisms

Fri, 25 Mar 2022 10:35:13 +0500

NDT-Inspect posted an update in the group Failure Mechanisms: Fracture Mechanicshttps://ndtinspect.com/fracture-mechanics/

Sat, 15 Jan 2022 03:38:49 +0500

Fracture Mechanics

https://ndtinspect.com/fracture-mechanics/

Doug started the discussion Chloride Stress Corrosion Cracking in the forum Failure Mechanisms

Fri, 06 Nov 2020 07:17:31 +0500

Chloride Stress Corrosion Cracking

The combination of tensile stress and a specific corrosive environment can crack stainless steels. This mode of attack is termed stress corrosion cracking (SCC). The most common environmental exposure condition responsible for SCC of stainless steels is the presence of chlorides. Although no stainless steel grade is totally immune to…