Engineering Stack Exchange
Engineering Stack Exchange

Questions tagged [biomechanics]

25 questions
29
votes
10 answers

How to quantify martial arts strikes?

Subtitled: Ah, strong am I with the Force, but how do I measure it? With all due apologies for paraphrasing Yoda, I am trying to measure a force. Fortunately, it's an easier force to measure than midi-chlorians. When I tutor others in karate, one…
user16
8
votes
1 answer

What is the physical meaning of pulse rate and blood pressure, from a turbo machinery point of view?

Our hearts are peristaltic pumps, which has a periodic compression and expansion. The head developed can be taken as blood pressure. There are situation when the blood pressure is normal while the pulse rate is high. What is the physical meaning of…
karthikeyan
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6
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3 answers

Center of Pressure Line from Barefoot Scan (EMED)

I have raw data obtained from EMED barefoot scan containing a matrix of pressure sensors over about 70 frames. This totals 70 matrices that record a snapshot of the pressure over the duration of a person's natural walk over the pressure plate. I…
blaklaybul
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5
votes
1 answer

Convert Load Deformation (Extension) Data to Stress-Strain Curve

I am trying to manipulate some data that were obtained from a three point load experiment on a porcine tibia. I would like to obtain a stress-strain curve for the various specimens; however, the only data that was given from the Instron three-point…
ANT1
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4
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2 answers

Suggestions for low friction surface materials for a "beltless static treadmill"

I'm currently developing a treadmill for clinic gait research. If I were to build a flat treadmill with no moving surfaces what materials or coatings would be worth exploring as walking surface. Ideally, the surface would be durable, safe to touch…
piman
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4
votes
1 answer

How is the long term reactivity of implant materials evaluated?

Various materials are implanted within the human body as a result of of medical need. Dental implants, stabilizing plates, arterial stents, and orthopedic replacements are all common examples where a material is implanted within the body. The…
user16
3
votes
1 answer

Estimating maximum lift or strength

Weight lifters will use the term "one rep maximum" in order to refer to the maximum amount of weight that they can lift one time. The one rep max is often used as a proxy for how strong someone is (or isn't). Recreational lifters, other types of…
user16
3
votes
0 answers

Creating a "pinhole" small enough to allow only one molecule to pass through

Consider a "cartridge" of sorts. Is it possible to construct a "pinhole" in the cartridge such that only one molecule will pass through at a time? If so, what sort of equipment would I need to construct such a pinhole, or what sort of company would…
auden
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2
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3 answers

Easily accessible material for maximum grip on a prosthetic hand?

Currently in the process of developing a 3d printed prosthetic hand and I am in need of advice on the type of rubber (or other material) we should use at the finger tips to give it more grip. The hand is capable of closing with a good amount of…
kang
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2
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0 answers

Book recommendation for hydrodynamics of bubbles, drops, and particles

I am wondering if someone could please recommend to me some references on the topic of hydrodynamics of bubbles, drops, and particles, preferably in the context of complex and bio fluids. I am currently reading the book $\textit{Bubbles, Drops, and…
Wuu23
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2
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1 answer

How to measure calories actually burned from exercise?

I'm just an average person who questions the validity of my treadmill's claims about how many calories I've burned after an hour's worth of a cardio workout. How can I get a more accurate measurement based on pre and post workout conditions? I…
Paul
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vote
1 answer

What are the basic mechanism, components or parts to generate relative movements?

I'm an engineer in industrial design and despite that I studied mechanics, kinematics and dynamics, I got difficulties when I try to label or find components which could enable my designs have relative movements, i.e. one part rotates inside…
Kevin Mamaqi
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1
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1 answer

Estimating joint angles using accelerometer data

the question I'm working on is the following: three IMU sensors have been placed on the lower limb, one of the hip, one on the thigh and one on the shank. The IMU sensors collect acceleration data in x/y/z directions, and gyroscope data for the…
Skidmore_TCIS
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1
vote
2 answers

Filtering Long-duration Signal

I have a long-duration EMG signal (~4 hours long) with a sampling frequency of 1 kHz. If I want to filter the data with a low-pass filter in 10 Hz in MATLAB, should I filter the signal with moving window? I am using Butterworth (4th order) IIR…
Larry To
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1
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1 answer

RULA upper arm angle

I want to perform a RULA based analysis on a set of participants and in order to calculate the RULA score I would need the upper arm(shoulder) angle. My question is would the upper arm angle be based of the trunk or the vertical axis? For example,…
Anurag Joshi
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