Saturday, 9 March 2019

Industry 4.0 - A Glimpse

The industrials technologies are always in a fast development. It all began with the first industrial revolution, with water and steam powered machines, to the last revolution industry 4.0. The term Industry 4.0 stands for new organization and control over the whole chain of the life of products. It is geared towards increasingly individualized customer requirements.

Lots of new technologies have been developed for the integration of industry 4.0. Some of them are Big Data and Data Analytics, autonomous Robots, Internet of Things, Augmented and Virtual Reality or additive manufacturing. Also the vertical and horizontal integration of systems is strongly being pushed by industry 4.0.

To put it in a nutshell, industry 4.0 increases the effective of machines, makes products and machines smart so they communicate together, optimizes Energy consumption and much more. In the whole this means cheaper production of more individual products.


Abstract - The role of AM in Industry 4.0


Maker's Abstract of I4.0: A review on industrail automation and robotic

This paper reviews th industrial automation and robotic used in Industry 4.0. Industry 4.0 is a fast rising topic and it is hard to stay up to date with today's technology.
This paper gives a short overview on the history of industrial revolution, technology of I4.0, robots in I4.0, international robotic organisations in I4.0, the industrial robotics potential in Malaysia and the impact of robotic I4.0

Since the advent of Information and communication technologies (ICT), economies of countries around the world increases dramatically as companies can compete on a global scale to grab the opportunity that presents. German intends to become the leading market for Industry 4.0 solutions lead the industry 4.0 revolution since 2011 to materialize its high-tech vision so that many of the company, organization and researcher take this opportunity to advance their knowledge and technology.
Bildergebnis für industry 4.0
Quelle: https://www.forbes.com/sites/bernardmarr/2018/09/02/what-is-industry-4-0-heres-a-super-easy-explanation-for-anyone/

Friday, 1 March 2019

Galilieo Galilei - The Falling Bodies Experiment (1589)



Galilio Galilei’s famous scientific experiment was named the falling bodies experiment, because he had proved that the speed of falling objects was not related to their mass.
Between 1589 and 1592 Galileo had dropped two spheres of different masses from the leaning tower of Pisa to demonstrate that their time of descent was independent of their mass.
He also discovered through this experiment that the object fell with the same acceleration,  proving that his assumption was true. At the same time he had disproving Aristotle’s theory of gravity, where he had pretended that objects are falling at speed proportional to their mass.
The theory of Galileo was, that lighter objects falling slower than heavier objects due to the air resistance.

Most historians believe that this experiment was rather a thought experminet instead of a physical test.

Experiment:

Galileo did this experiment by using two objects with sphere shape, one cannon ball and one wooden ball. The weight of the wooden ball was the tenth of the weight of the cannon ball. According to the theory from Aristotelian, the cannon ball should be ten times faster, than the wooden ball. So, by the time, when the cannon ball hit the ground, the wooden ball should only have traveled 10 percent of the distance to the ground.

Galileo dropped this two balls off the leaning Tower of Pisa in an attemt to disprove Aristotle's theory and proving his.

The results:

At first the wooden ball fell a bit faster but the cannon ball overtook the wooden ball and was landing slightly before the wooden ball.
So, this experiment could not prove the theory of Galileo, but he took these results and over the next decades he came up with the Law of Falling Bodies.
This states, that in a vacuum all bodies are accelerated in the same way, regardless of their weight, shape or specific gravity.



The Stanford-Prison-Experiment


The Stanford-Prison-Experiment

This was a psychological experiment about the behaviour between the prisoners and the prison officers in a real prison. „The Stanford experiment„ was created by Professor Philip Zimbardo. This experiment was conducted 1971 in a real prison in Stanford. At the beginning volunteers were randomly assigned to be either a prisoner or a prison officer. The leader of this test was the superintendent of the prison. The beginning of the experiment was that real policemen publicly arrested the volunteers. After arresting the volunteers went into specially set up cells in the basement. The cells were very bad without any window. The cells had only a small hole for some light. Through an intercom the prison officers communicated with the prisoners.  

Bildergebnis für the stanford prison experiment

After six days the experiment was abandoned. The reason for that was the behaviour of the prison officers. They enforced their rules to much and some of the prisoners were part of psychological tortures. Some of the prisoners accepted that. Others of them tried to stop it. Some findings of this experiment have been called into question because of the unscientific methodology and possible fraud.