Damage Boundary Curve
The Damage Boundary Curve (DBC for short) is a means of detecting damage to an object caused by impacts . The DBC divides a shock diagram into two areas, a non-critical and critical shock area. An impact that touches the critical area can have a destructive effect on an object.
theory
Impacts are described in acceleration-time diagrams, time on the horizontal axis and acceleration on the vertical axis. In the diagram, impacts can be seen through areas above the time axis. A large area indicates a strong impact, i.e. usually a long impact with high acceleration values.
The DBC cuts a diagram in two with a line running through the middle of the diagram. The uncritical joint area is on the left and lower side of the line, the critical joint area is on the upper and right side of the line. A critical shock describes a strong shock with destructive potential for an object. The DBC is indicative of a specific subject. The DBC in the diagram is oriented differently depending on how sensitive an object reacts to impacts.
Figure 1 shows a shock diagram with DBC. The diagram contains three impacts, with only impact 2 touching the critical area and potentially causing damage to the object being examined.
practice
Shock diagrams with DBC are used, among other things, to examine sensitive and valuable goods transports, loads on objects in production facilities or loads on machines in productive use. For this purpose, acceleration loggers record impacts that act on the object to be examined. The recordings are shown in a shock diagram with DBC. If there is an impact in the diagram that touches the critical area, damage to the object must be expected.
Individual evidence
- ^ Horst Kuchling: Taschenbuch der Physik, Carl Hanser Verlag, Munich 2007, ISBN 978-3-446-41028-2 , pages 74-77.
- ↑ a b Susan Selke: Understanding plastics packaging technology, Carl Hanser Verlag, Munich 1997, ISBN 3-446-18684-0 , pages 5-6.