The phrase "aged specimens" is correct and usable in written English.
It can be used in contexts related to biology, archaeology, or any field where the age of specimens is relevant to the discussion or analysis.
Example: "The museum displayed a collection of aged specimens that provided insight into the ancient civilization's practices."
Alternatives: "old specimens" or "vintage specimens".
For this purpose, test series have been carried out to determine all relevant material parameters needed to describe the strain energy potential, namely tension, compression, shear and multi-axial oedometric test series on non-aged and artificially aged specimens.
De-aging, by heating aged specimens to higher temperatures but below Tg, was observed to reduce the extent of physical aging and the increase in the rates of crystallization closely followed the residual extent of aging.
The trend of absorption during the ageing treatment was evaluated and, after the exposure period, the mass increment and mechanical properties of aged specimens were compared to un-aged ones.
For aged specimens, the fatigue life did not change appreciably.
The ranking of fatigue cracking resistance of short-term aged specimens using different binders correlated well with the ranking of fatigue cracking resistance of long-term aged specimens.
Tensile tests have been carried out for water quenched and aged specimens.
Natural aged specimen observed maximum wear resistance.
To understand the effect of loading and ageing on the adhesively bonded joints, quasistatic tension experiments have been performed with the original T-joints and with two sets of artificially aged specimen.
However, the rate of aging of hygrothermally aged specimen is faster than that of the thermal one due to the role of water as a plasticizer in the polymeric bulk.
a full spectra; b amide I and II regions; c peak fitting of the amide I and II region in unaged specimen; d peak fitting of the amide I and II region in aged specimen (32 days).
a Entire spectral region; b Amide I and II regions; c peak fitting of the amide I and II region from spectra collected from unaged specimen; d peak fitting of the amide I and II region in aged specimen (32 days).
