The phrase "an experiment designed" is correct and usable in written English.
You can use it when referring to a specific experiment that has been intentionally created or structured for a particular purpose or hypothesis.
Example: "The researchers conducted an experiment designed to test the effects of the new drug on patients with chronic pain."
Alternatives: "a study created" or "a trial formulated".
The paper presents results of an experiment designed to capture and compare instances of reinterpretation by student designers.
In an experiment designed to test the "anchoring effect", highly experienced judges were given a description of a shoplifting offence.
It is also an experiment designed to further normalise the socialisation of the massive, speculative debts of the banking sector.
Dr Bugnyar was conducting an experiment designed to see what ravens learn from each other while foraging.
By the end of July work should have finished on building NOVA, an experiment designed to pin those details down.
It was filled with water and a dissolvable antacid tablet as part of an experiment designed to demonstrate how pressure propels rockets.
The flight – Atlantis's 33rd – also includes an experiment designed to demonstrate the tools and techniques required for robotic refuelling of satellites in space.
In this area, Cowan and a colleague, Paul Bodin, had conducted an experiment designed to test for seismic activity along Death Valley's faults.
Earlier in the year, a North Carolina State University scientist had successfully replicated an experiment designed by a citizen scientist to test the salinity tolerance of invasive lionfish.
For example, in an experiment designed to determine whether BSE can be transmitted from cow to calf, calves in the control group were fed with infected feed.
As a case in point, consider an experiment designed to determine the effect of three different exercise programs on the cholesterol level of patients with elevated cholesterol.
