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Dropped pipe from PLS

Submitted by Rovshan on
industry
Facts
Whilst picking up a joint of drill pipe with the PLS, the jaws opened,
and the pipe fell approximately 3 meters to the drill floor.
The red zone was enforced with barriers. There were no personnel
within the barriered off area. The pipe was recovered, with no damage to
the machinery, and the operation was continued after a TOFS.
Causes
An investigation team was sent from onshore, so we are awaiting the
outcome of that investigation. We can say it was observed that the jaw
function had been selected to ‘open’ and this may have happened when the

Postdoc or Research Associate opening on bi-metallic friction stir welding joining at Texas A&M university at Qatar

Submitted by gayoub on
job

The work involves working independently and collaboratively on: Identifying processing parameters that will optimize the properties of the bi-metallic joint, developing a material constitutive model for impact loading conditions, developing an experimentally validated numerical model the can be used to predict the joint performance under impact loading conditions, and developing design and processing guidelines for the bimetallic joints.

Topic 69: The essence of performing FMEA and FMECA in Safety and Risk Management

Submitted by Abiaziem Davidson on
industry
Safety Engineering and Risk Management Debate 2012

Failure Modes and Effects Analysis (FMEA) is an inductive method of performing a system reliability or safety analysis from a low to a high level. It is a Bottom Up approach in which the analyst looks in turn at each system component, assesses the effects of its failure on system behaviour.

The basic FMEA technique is to:

i. Examine each component in turn

ii. Identify ways in which it can fail (Failure Modes)

iii. Identify the consequence of these failures (failure Effects)

PhD position in nano-/micro mechanics

Submitted by pooria pasbakhsh on
research

 One PhD student position is available at Monash University, Sunway Campus in Malaysia with the leadership of Prof A.K Soh. 

 We expect students with the knowledge and experience in at least two or more of the following skills:



1. nano-/micro-mechanics.

2. computational mechanics.

3. fabrication and characterization of advanced materials, e.g.nano-thin-films, nano-wire arrays, functional materials, etc.

4. strong physics/chemistry knowledge, e.g., quantum mechanics.

 

Ramping initial stress in Membrane elements

Submitted by ashwin_blj on
software
ABAQUS

Hi,

I am doing an explicit analysis, i am trying to model a woven fabric structure. I have to pre-stress the fabric so i have used this option. 



*AMPLITUDE, NAME=name

*SECTION CONTROLS, RAMP INITIAL STRESS=name



Details from INP file



*Membrane Section, controls = SC, elset=FABRIC, material=FABRIC

0.5,



*AMPLITUDE, NAME = RampStress, DEFINITION = Smooth Step,time=total time

0.0, 0.0, 0.0025, 1.0, 1.0, 1.0



*SECTION CONTROLS,NAME=SC, RAMP INITIAL STRESS=RampStress

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