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Safety Engineering and Risk Management Debate 2012

This is the discussion blog for the MSc course "Fundamental Safety Engineering and Risk Management Concepts" lectured at the School of Engineering, University of Aberdeen. This course is a core module for the following Postgraduate Taught Programmes:

on Nastran output2 format,

Hi everybody, I am trying to write a program to read Nastran op2 files and I am having a lot of problem understanding the basic structure of these files. Anybody has a hunch ?

NANOVEA's picture

Hydrogel Hardness Using Nanoindentation

Hydrogel is known for its super absorbency of water allowing for a close resemblance in flexibility as natural tissue. This close resemblance has made Hydrogel a common choice not only in biomaterials, but also electronics, environment and consumer good application such as contact lens. The use and diversity in application have each their own unique needs and requirements. One such requirement will be known and controlled mechanical properties using nanoindentation.

Large Epsilon 3D


CAE system for strength analysis at large strains redistribution.

NANOVEA's picture

Fracture Resistance of Silicon With Nano Scratch Testing

Scratch testing, using nano loads, has become widely used for the study of adhesion strength and marring resistance of thin films and coatings. This same test can also be used to study fracture behavior on brittle substrates similar to a marring resistance test approach. This can provide an in-depth observation of failure on delicate substrate materials at precisely controlled and recorded loads.

NANOVEA's picture

Nano Puncture Resistance Using Nanoindentation

Traditional Puncture Tests are typically used to determine the penetration characteristics of a wide range of protective material such as films, foils or membrane. It is widely used in food and medical industries on applications ranging from food packaging to rubber gloves and needles. The test is preformed like that of a compressive test. A probe, with multiple tip selection, uses increasing load until material is penetrated and load is recorded at failure.

profilometer's picture

Profilometers using Low Coherence Interferometry used by NASA to measures thickness

Using a fiber-based optical profilometer NASA measures the thickness of liquid nitrogen in cryogenic chambers at its Propulsion Systems lab because these profilometers use fiber-based probes which can withstands the extreme environment, can be located hundreds of meters away from the interferometer and fit in the tight chamber which standard full-field profilometers with a human operator could not. The signal quality stays constant over the distance.

NANOVEA's picture

Nanovea Unveils Its New Revolutionary N3 Line

Irvine CA, January 18, 2012 - Nanovea today announced the arrival of the N3 line dedicated to providing high-end measurement technology to the broader market. Nanovea has fully automated their measurement techniques while designing to price in the $20K market.

Generating MIST

Choose a channel featured in the header of iMechanica: 

Dear friends,

I have a question which I posted in BLOGS section a week or so back. But I have no reply / comment  from any reader of the blog.

So I am re-posting the same in this section ( FORUM) .

The query is as below ;

Generating MIST
from still water

gloriatrack's picture

Renewable Power And Sunlight Energy - Thin-Film Solar Panel Products

As technology constantly advances there are many new green technologies released each day that can help us improve our energy efficiency. One such technology is the "Thin-Film Solar Panel." How are thin-film solar panels being utilized by consumers today? How do they compare against traditional photovoltaic (PV) panels?

How Solar Cells Work

Mu.Hesan's picture

Question about "usage of atmospheric flares (burners)" in refineries

Why do we use "atmospheric flares (Burners)" in preheat gas furnaces of refineries? What are benefits of usage of these kind of flares (burners) in refineries, in comparison whit other flares?!!! 

NANOVEA's picture

Shot Peen Hardness With Nanoindentation

The intention of shot peening is ultimately to alter the mechanical properties of a given surface. By hitting the surface with controlled shot the surface will deform plastically. Proper Instrumentation, nanoindentation, will play a vital factor in achieving reliable and intended results.

FREE WEBINAR Food and Drinking Water Contact EU Regulations for Plastic Composites – How to be Prepared

There is a new European regulation (10/2011) addressing plastic materials and components intended for food contact. It is important to understand this regulation to ensure compliance, thus protecting your company when it becomes effective. The new regulation applies to all unreinforced and reinforced plastics, including those that are reinforced with glass fibres. This presentation addresses glass reinforced plastics and the necessary changes that you should be aware of. To see more go to

NANOVEA's picture

Shot Peened Surface Characterization Using 3D Profilometry

Shot peening is a process by which a substrate is impacted with round metal, glass or ceramic beads, also known as shot, at a force intended to create plasticity on the surface. The characteristics present prior to and after the peening process provides vital information to better the understanding and control of the process. Among many others, surface roughness and dimple coverage area left by the shot, are of particular interest using a profilometer.

NANOVEA's picture

Microindentation Mapping With Acoustic Emission On Glass

Microindentation hardness mapping has been widely used to assess the variation of mechanical properties across a large surface area. However, with the study of applications such as glass it is the crack initiation that is of particular interest. It is for this reason that acoustic emission can be used during the mapping of indents to not only map hardness but also map the crack initiation values over the surface area.

help friction+shear

Dear friends,

Looking for a possible solution of a problem with external axial friction moment on a shear bolt.I tried to get literatures related with this type of combined loading,but not succeed much.If u can help me it would be great!

NANOVEA's picture

Stribeck Curve Analysis Using Tribometer

When lubrication is applied to reduce the wear/friction of moving surfaces an increasing load can shift the lubrication from several regimes such as Boundary, Mixed and Hydrodynamic Lubrication. The fluid viscosity, the load that is carried by the two surfaces and the speed that the two surfaces move relative to each other combine to determine the thickness of the fluid film. It is this process that determines the lubrication regime. How the regimes react to friction is shown in what is called a Stribeck curve.

Water Landing of Space Flight Re-entry Vehicles Using Abaqus/Explicit

Space flight re-entry vehicles need to withstand heavy impact upon landing and it is critical for engineers to understand the effects on the vehicle and the crew to ensure the safety of the mission.  In order to gain this insight, engineers need to be able to model both the space craft structure and the landing medium such as water, sand, clay, etc.

SIMULIA's picture

Crash Prediction for Marine Engine Systems Presented at the 2008 Abaqus Users’ Conference

Mercury Marine outboards, engines, and drives are designed to withstand indoor impact testing (called “logstrike”) that simulates a collision with an underwater object. This test is comprised of an outboard or sterndrive device mounted on a mock boat that collides with a simulated log.

SIMULIA's picture

Paper Flow Simulation Using Abaqus

Paper transport is one of the areas under media handling methods where papers are transported by rollers through different path ways. The challenge in media handling is to transport the paper smoothly with out jam or in-plane deviation (paper skew). The smooth flow of paper is influenced by grade of paper, complexity of flow path, roller speed, roller pre-loads and significantly the roller material. It is also costly and difficult to develop a physical flow path testing.

Moving and Transportation in Turkey

This post will be continued in Turkish Language because this is related to Moving (means Evden eve nakliyat) in Turkey.

NANOVEA's picture

Breakthrough Indentation Yield Strength Test


July 14, 2011 – Irvine, CA – Nanovea today introduced its patent pending breakthrough method of reliably acquiring yield strength through indentation; ultimately replacing the traditional tensile testing machine for yield strength measurement.

Modeling time dependent function in Abaqus/CAE



I am very new to Abaqus so I apologize since I am probably using the incorrect terminology for this and asking a fairly simple question.


I would like to model a laser beam striking a part the part is rotating w.r.t. the beam and I would like to model this. I have already set up Cylindrical coordinate and I just want the beam to sweep the surface following the equation:


Theta = Omega * Time


Theta:= Angular Position

Omega:= Angular Velocity

Time:= Time


NANOVEA's picture

Fractography Analysis Using 3D Profilometry

Fractography is the study of features examined on fracture surfaces and has historically been investigated via Microscope or SEM. Microscope being used for macro scale analysis and SEM particularly when it is the nano or microstructure that is vital to the analysis. Both ultimately allowing for the identification of the fracture mechanism type. Although effective, the Microscope clearly has its limitations and the SEM in most cases, other than atomic level analysis, is unpractical for fracture surface measurement and lacks broad use.


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