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Material science has always a topic of research and fascination, about how a single atom has so many properties that can alter the whole tensile as well as the ultimate strength of a material such as cement or concrete which is used build skyscrapers …yes the same you watch in Hollywood movies.
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These seven basic quality tools, which can assist an organization in problem-solving and process improvements. Learn this awesome skill Free Here
Continue reading Manufacturing Industries needs the skill of 7 QC Tools
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Learn more about torque and moment in our online course Strength of Machine
In physics, they signify the same thing but in mechanics, they hold slightly different meanings. Both have the same unit i.e. N-m but torque is a movement force whereas the moment Is a static force. Torque is used where there is rotation involved whereas moment Is used where there is no rotation.
Application of moment and torque for varied and interesting to observe. I hope everyone has played on a seesaw at least once in their life.
What if I tell you that you can keep the saw balanced by having a 120 kg person one side and a 50kg person on the other side?
It seems difficult to accept but if you place them in such a way that the lighter person is at 3m from the center and the healthy person is at 1m. They both will apply the same moment and the seesaw will be balanced.
In rural areas, people still use the concept of the moment to churn milk. By providing a torque to the handle with the help of the rope the wooden stick rotates about its axis and thus, in turn, churns the milk. Learn more about torque and moment in our online course Strength of Machine
A similar concept of torque is used in old dams where the force of the falling water rotated the water wheel. The water wheel was connected to a dynamo thus generating electricity by the principle of conversion of kinetic energy into potential energy.
Learn more about torque and moment in our online course Strength of Machine
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The International System of Units (SI)has become the fundamental basis of scientific measurement worldwide. This system is an extension and refinement of the metric system, which is more superior and convenient than other systems. It provides one basic unit for each physical quantity. So, the 7 units of measurement are follow
The basic fundamental unit of mass is “Kg”. We also measure mass in Gram, Pound, Metric ton, Stone, Microgram, Carat, etc.
The basic fundamental unit of Time is “Sec(s)”. We also express time in seconds, minutes, hours, days, weeks, years, etc
The basic fundamental unit of Electric Current is “Ampere(A)”.
The amount of Substance is a dimensionless expression of the number of particles in a particle or object. The basic fundamental unit of Amount of Substance is “Mole”. The amount of substance all called material quantity.
The SI unit of Illumination is “Candela”. Candela is denoted by symbol ‘cd’. Some other units are lux, lumen, etc.
The SI unit of Distance is “Meter”. Distance also measures in mm, cm, km, yard, inch, foot, feet, etc.
The SI unit of temperature is “kelvin”, expressed as the word “K”.Temperature 0 K is known as “absolute zero.”
We use two types of scale in measuring temperature that is –
1.Relative scales [Fahrenheit (°F) and Celsius (°C)]
2. Absolute scales [Rankine (°R) and Kelvin (K)].
This seven basic quality tools, which can assist an organization for problem solving and process improvements. Learn this awesome skill Free Here.
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The first who introduce the seven basic tools is Dr. Kaoru Ishikawa (1968).
Check sheets are sheets that are designed in advance to collect the necessary data easily and systematically, which allows the efficient checking off all items for inspection and verification.
Check sheets are tools for collecting data. They are designed specifically for the type of data to be collected. Check sheets aid in the systematic collection of data.
Some examples of check sheets are daily maintenance check sheets,
attendance records, production log books, etc
The histogram is a very useful tool to describe a sense of the frequency distribution of observed values of a variable.
Histograms or Frequency Distribution Diagrams are bar charts showing the distribution pattern of observations grouped inconvenient class intervals and arranged in order of magnitude.
It should be designed properly for those working into the operation
the process can easily utilize and understand them.
Pareto Analysis introduced by an Italian economist Vilfredo Pareto,
who worked with income and other unequal distributions in the 19th century,
he noticed that 80% of the wealth was owned by only 20% of the
population. Which means the majority of defects are caused by a few defective items later, the Pareto principle was developed by Juran in 1950.
Kaoru Ishikawa is considered by many researchers to be the founder and the first promoter of the ‘Fishbone’ diagram (or Cause-and-Effect Diagram) for root cause analysis and the concept of Quality Control (QC) circles.
A Cause-and-Effect Diagram is a tool that shows a systematic relationship
between a result or a symptom of an effect and its possible causes.
When solving a problem or analyzing a situation one needs to know the relationship between two variables.
Scatter diagram is a powerful tool to draw the distribution of information
in two dimensions, which helps to detect and analyze a pattern
relationships between two quality and compliance variables (as an
independent variable and a dependent variable), an understanding if there is a relationship between them, so what kind of relationship is (Weak or strong and positive or negative).
A Flowchart visualizes a picture including the inputs, activities, decision points, and outputs for using and understanding easily concerning the overall objective through the process.
Control chart or Shewhart control chart was introduced and developed by Walter A. Shewhart in the 1920s at the Bell Telephone Laboratories and is likely the most “technically sophisticated” for quality management (Montgomery, 2009).
Control charts are a special form of “run chart that illustrates the amount and nature of variation in the process over time”.
Also, it can draw and describe what has been happening in the process.
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