HELLO ALL: Vehicle road testing can be done over predefined road profiles. The Perryman Profiles are often used. I am trying to find the definition of the Perryman Profiles. Does anyone have the profiles for the Perryman 1,2,3,4 road courses? I have searched the internet and have been...
HELLO ALL: It has been over 30 years since I have worked witn the moment distribution . I am really rusty. By the way this is not a homework problem this is a real world problem. Here is the problem I am trying to solve.
A simple 2 dimensional frame with 8" legs and an 11 inch top cross...
HELLO ALL: Here is my question:
A bus (40000#) hits a auto (4000#) in the rear end at a low speed (10 mph) The strucural supports for the bike rack on the bus are deformed plastically. Is there a way to calculate/estimate the force on each of the two brackets?
Cordially
Dave
HELLO ALL: Attached are two images of a 10-32 zinc plated steel screw that failed under a sidewise load. The load was applied under the head and the screw broke at the top of the threads in a rivnut. The part that bothers me is the hole in the middle of the screw that is seen in the endview...
HELLO ALL: This is a real problem. A uniform rectangular flat steel plate hinged on one side is held at an angle, theta (90<theta>0). The only force acting is earth's gravity. The plate is suddenly released and allowed to fall under th influence of gravity to the horizontal position. ignore...
HELLO ALL: I am familiar with dye penetrant and magnetic particle crack detection, but I am asking for input/references on other, newer methods such as ultrasonic acoustic emission. I am interested in equipment availabie, ease of use, ease of interpretation, relative costs, and the tough one...
HELLO EVERYONE:
I am trying to find information on "Miles rule". Apparantly it is used in vibration work. Can anyone recommend a good book or article?
Thanks to all
Regards
Dave
HELLO EVERYONE: What are the advantages and disadvantages of decimating digital data. Say we take data at 100 hz and decimate it by ten to 10 hertz. What problems can be expected of solved? One that comes to mind is aliasing. If decimation effectively moves the sample rate below the filter...
HELLO ALL:
I have seen several light airplanes (Cessnas, pipers, etc) with hail dimples. I have HEARD that the hail dimples can be removed by palcing dry ice over the dimple.
Is this true? If not is their a method other than reskinning?
Regards
Dave
Hello everyone:
Would/could someone please reply with the ANSI Z21.10 criteria for the CO and NOX specifications for a 30,000 btu/hr input residential hot water heater. I only need this information and do not want to pay $656.00 for the entire spec.
Regards
Dave
HELLO: I am analyzing some accelerometer vibration data and have to put it in a one-third octave format. My question has to do with noise reduction. In a normal analysis the noise can be reduced in the frequency domain by successively averaging the data blocks of the PSD. My software(DaDisp)...
HELLO ALL:
IS THERE A RULE OF THUMB FOR AIR CONDITIONING SIZE IN THE NORTHERN SAN DIEGO AREA OF CALIFORNIA. I HAVE COME ACROSS 500 SQ FT PER TON. WHICH MEANS THAT AN 1800 SQ FT HOUSE WOULD NEED ABOUT 3.6 TONS OF A/C. I BELIEVE THAT IS TOO MUCH. THE BUILDER SIZED THE PIPING FOR 3 TONS. I...
HELLO: Does anyone know of a research pare/test report/magazine artilce/ or something else that relates to the erosion corrosion rate of potable water flowing inside a damaged residential under slab copper pipe. i am trying to estimate (guess) the time required for the erosion corrosion. to...
