Human Factors Engineering. Presented by: C. Macris A. C. Macris Consultants. Here’s a group of seemingly unrelated things. The Common Thread. The common thread is – People. An academic definition of Human Factors Engineering.
A. C. Macris Consultants
The common thread is –
The central focus of human factors relates to the consideration of human beings in the design of man-made objects, facilities and environment that people “use” in the various aspects of their lives.
The central approach is the systematic application of relevant information about human characteristics and behavior to the design of the these objects, facilities and environments.
Why is design so important?
Good human factors design yields returns in improved performance and reliability.
Let us look at a simple example of design
This is a rather conventional American design
This car was imported into the US in the late 1970s from Italy. Note the Tachometer in the center with the Speedometer to the right along with more instrumentation. The cultural design difference is there were no speed limits in Italy, but engine speed was of considerable interest. Needless to say this design did not last long in the US.
Typically is in response to something gone wrong
Can be proactive in the context of
Assessment yields returns in the context of avoiding future losses, better design and improved operations.
Table Saw Blade Guarding
Design issues with guard
Red line indicates a plastic piece across inner part of guard – sawdust collects making visibility difficult
Dimension of guard width and ability to rip narrow pieces of wood
Setup and alignment is tedious
A page from a newer saw – they afforded the user an alternative for narrow ripping cuts.
We conducted a very comprehensive Table Saw guarding survey. Below is a summary of the findings.
Four reasons sited for not using guard
Difficult to adjust
Gets in the way
Safer without it
Inhibits my work
One reason not sited for not using a guard
Takes longer to cut
Reason that they would more apt to use a guard
Better design and loss of fingers was the reason respondents gave.
Warnings represent a broad range of human interface issues. These issues include:
For a warning to be effective the user must:
Product Safety Sign or Label: Sign, label, or decal affixed to a product that provides hazard and safety information about that product.Panel: Area of label having a distinctive background color different from adjacent areas, or which is clearly delineated by a line, border, or margin. Message Panel: Area containing word messages which identify the hazard, how to avoid the hazard, and the probable consequence of not avoiding the hazard.Signal Word Panel: Area that contains the signal word. For personal injury hazards, the signal word panel also contains the safety alert symbol.Symbol/Pictorial Panel: Optional area containing symbol/pictorial.
an imminently hazardous situation which, if not avoided, will result in death or serious injury
a potentially hazardous situation which, if not avoided, could result in death or serious injury
a potentially hazardous situation which, if not avoided, may result in minor or moderate injury
A. C. Macris Consultants
PO Box 535
Mystic, Connecticut 06355