arithmetic average roughness

USAGE SUMMARY

The phrase "arithmetic average roughness" is correct and usable in written English.
It can be used in contexts related to engineering, manufacturing, or surface texture analysis where measurements of surface roughness are discussed. Example: "The arithmetic average roughness of the machined surface was measured to ensure it met the required specifications."

✓ Grammatically correct

Science

Human-verified examples from authoritative sources

Exact Expressions

8 human-written examples

The surface roughness (arithmetic average roughness) of the parts is 0.0002 mm.

Precision Engineering

The surface arithmetic average roughness (Ra) and root mean squared roughness (RMS) have been measured by an atomic force microscope (AFM: Veeco Mutimode Nano4).

Nanoscale Research Letters

The corresponding values of arithmetic average roughness of the samples were 16.9 nm, 10.5 nm, 9.1 nm and 41.0 nm, respectively.

Surface and Coatings Technology

Larger filler particles in a material protrude from the surface; as the resin matrix is removed during the finishing and polishing, the arithmetic average roughness values (Ra) tend to increase [16, 17].

Applied Adhesion Science

Table 1 shows the surface arithmetic average roughness (Ra) and root mean squared roughness (RMS), and the length and width of maximum grains of the ferrite films on the p-Si (100) substrates.

Nanoscale Research Letters

The effects of the UV laser microprocessing parameters, including laser power density, frequency, laser scanning speed, and pass delay on microprocessing accuracy and quality (kerf width and arithmetic average roughness Ra on the kerf sidewall) were investigated by means of a 4×× 4 orthogonal design.

Journal of the European Ceramic Society

Human-verified similar examples from authoritative sources

Similar Expressions

52 human-written examples

First, experimental investigation was carried out to examine the effect of process condition include spindle speed and feed rate on Arithmetic Average Surface Roughness (Ra) and machining time values and also uncertainty in measured values.

Measurement

The arithmetic average surface roughness (9 34 nm), the friction coefficients (0.01 0.3), the density (2.2 2.4 g/cm3), the microhardness (16 75 GPa) and the internal stresses in the films (3 7 GPa) were measured.

Surface and Coatings Technology

Hence, an attempt has been made in this paper to study the effects of cutting conditions on machinability characteristics such as cutting force, feed force, depth force, machining force, power, specific cutting force, arithmetic average surface roughness and maximum peak to valley height during tungsten copper turning with K10 carbide cutting tool.

International Journal of Refractory Metals and Hard Materials

Ra is the arithmetic average of the roughness profile.

Applied Adhesion Science

Table 1 Arithmetic average of surface roughness R a (means and standard deviations [μm]) and wettability (means and standard deviations ) of the ten tested material.

International Journal of Implant Dentistry

Expert writing Tips

Best practice

When writing technical reports or scientific papers, clearly define "arithmetic average roughness" (Ra) at first mention to ensure clarity. Subsequently, you can use "Ra" to improve conciseness.

Common error

Avoid using "arithmetic average roughness" (Ra) interchangeably with other surface roughness parameters like Rq (root mean square roughness) or Rz (maximum height). Each parameter describes different aspects of surface texture, and using the wrong one can lead to misinterpretations.

Linguistic Context

The phrase "arithmetic average roughness" functions as a noun phrase that specifies a particular measurement of surface texture. According to Ludwig, this phrase is correctly used in written English. It's common in technical contexts where precise surface characteristics are important.

Expression frequency: Uncommon

Frequent in

Science

100%

Less common in

News & Media

0%

Formal & Business

0%

Academia

0%

Ludwig's WRAP-UP

In summary, "arithmetic average roughness" is a technically sound and usable phrase for describing surface texture. As Ludwig confirms, it's grammatically correct and widely accepted in scientific and engineering writing. While alternatives like "mean surface roughness" or "Ra" exist, it's important to maintain precision and consistency in technical documentation. To ensure accuracy, avoid confusing Ra with other roughness parameters and always provide a clear definition upon its first use.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

mean surface roughness

Replaces "arithmetic average" with "mean", a statistically equivalent term. It's a more concise way of expressing the same concept.

arithmetic mean roughness

Replaces average with the synonym "mean".

average surface roughness

Omits "arithmetic", implying it, as "average" usually refers to the arithmetic mean in this context. This makes the phrase slightly shorter.

Ra roughness value

Uses the symbol "Ra" which is the standard abbreviation for arithmetic average roughness. This is common in technical writing.

AA roughness

Uses the abbreviation "AA" (Arithmetic Average) which is another way to express the same concept, common in technical contexts.

surface roughness average

Reorders the words, maintaining the meaning but slightly altering the emphasis.

roughness average

A shortened version that still conveys the meaning, suitable when the context makes 'surface' obvious.

center line average roughness

Explicitly states the reference line used for the average calculation.

average of the absolute roughness profile deviations

This alternative provides a more descriptive explanation of what "arithmetic average roughness" represents.

average height of surface irregularities

Describes the physical characteristic being measured.

FAQs

What does "arithmetic average roughness" (Ra) measure?

"Arithmetic average roughness" (Ra) measures the average absolute deviation of the roughness profile from the mean line. It provides a general indication of the surface texture's smoothness.

How is "arithmetic average roughness" calculated?

Ra is calculated by summing the absolute values of the vertical distances of each point on the roughness profile from the mean line, and then dividing by the evaluation length. This gives the average height of the irregularities.

What are some alternative terms for "arithmetic average roughness"?

You can use alternatives like "mean surface roughness" or "average surface roughness". The symbol Ra is also commonly used.

What is the difference between "arithmetic average roughness" (Ra) and root mean square roughness (Rq)?

While both Ra and Rq measure surface roughness, Rq is more sensitive to extreme peaks and valleys because it squares the deviations before averaging. Ra provides a general average, while Rq gives more weight to larger deviations.