Services Welded Brazed Soldered Bolted Joint Failures

The role of joints whether welded, brazed, soldered or bolted is the most critical aspect to hold any assembly together. Joints are usually the weakest link in the total assembly and decide the overall integrity of equipment. Joint failures are as specific as the nature of joining process. Welded joints can fail due to lapses during the welding parameters, operational skills or merely because of properties inferior to base metal. AEIS personnel have analyzed welded joint failures from a variety of weaknesses  such as cracking, lack of fusion, undercuts, faulty fit ups, improper pre heat, or stress relieving, wrong consumables, to name a few.  Similarly we have come across numerous bolted joint failures and studs that have rolling defects, machining lapses, or dirty material. Brazed or solder joints made from deficient chemistries or with deficient geometries have caused numerous joint failures that we have recorded. AEIS personnel have analyzed soldered joint failures that have lead to chronic failure of bus Radiators and generators of buses. We have been retained by various legal and private parties as an independent body to carry out failure analysis for settling disputes. AEIS is often retained by fastener manufacturers to carry out testing and development work of for the purpose quality improvement or cost optimization.

Some of the joint failure analysis carried out recently include:

  • Joint failure of a dredger base due to faulty weld profile
  • Joint failure of a radar of a tug boat due to deficient design
  • Joint failure of a passenger ferry hull because of lack of quality control
  • Chronic solder joint failure of radiators on a fleet of buses due to manufacturing deficiencies
  • Premature joint failure of generators soldered using weak joint material.
  • New York
  • New Jersey
  • New Delhi