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  • Research
  • Test Methods
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Research

Research

Measuring Pressure, Flow and Volume

Measuring Pressure, Flow and Volume

Soft Lung

Test lungs have been developed for research on infant breathing models.  This set of lungs is instrumented for pressure, flow and volume.  Click the video below.

Measuring Pressure, Flow and Volume

Measuring Pressure, Flow and Volume

Measuring Pressure, Flow and Volume

Testing Infant Products

By recording the pressure, flow and volume of the lungs, Work of Breathing from contact with a bedding surface can be calculated.

Gas analysis

Measuring Pressure, Flow and Volume

Gas analysis

Carbon dioxide and oxygen concentrations are measured using laboratory-grade analyzers.

Gas Measurements

CO2 and O2

As Carbon Dioxide accumulates in the lungs it displaces oxygen.  The relationship between CO2 and O2 can be calculated and is illustrated here from direct measurements in the breathing model.

Soft lungs

Work of breathing

Our soft lung model responds to resistance and has volume and compliance similar to an infant.  Measuring instruments are used to record pressure, flow and volume.  Pressure-volume data is used to calculate Work of Breathing.

Schlieren

Schlieren video

The infant breathing model has been used to visualize the flow field around an infant using a technique called Schlieren photography.  Click above to view a 3-minute video showing rebreathing in action.

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Copyright 2024 ASTM Int'l, West Conshohocken, PA DOI:10.1520

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Schlieren


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